Software Alternatives & Startups

FillGap.app VS MacroFactor

Compare FillGap.app VS MacroFactor and see what are their differences

FillGap.app

Food and supplements in one nutrient portfolio. See which of 33 nutrients you're short on with GLP-1, perimenopause or plant-based eating, and what fills each gap. iPhone and Android.

Rating
0 reviews
Pricing
Freemium $14.99 / Monthly (Premium)
MacroFactor

Reach your diet goals with MacroFactor, the smartest macro tracker and diet coach app. Download and try it free now.

Rating
0 reviews

Which is more popular?

Supplement Tracker popularity
100% vs 0%
alternatives listed
8 vs 139

Base details

Website, pricing, platforms and company facts side by side.

FillGap.app
MacroFactor
Website fillgap.app macrofactor.com
Pricing
Freemium $14.99 / Monthly (Premium) Official pricing
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Platforms
iPhone Android
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Company Startup from Canada · 1 - 9 employees · 2026 —
Listed in

About FillGap.app and MacroFactor

In their own words, as submitted to SaaSHub.

FillGap.app
MacroFactor

FillGap is a nutrition app for iPhone and Android for people who eat less and need every bite to count: people on GLP-1 medications, in perimenopause, or eating plant-based. Snap a meal photo, scan a barcode or a supplement label. FillGap combines meals and supplements in one nutrient calculation...

Read more about FillGap.app

No description of MacroFactor yet.

Features and specs

What each product offers, as listed by its team.

FillGap.app 7 features
MacroFactor 5 features
  • Food + supplements combined
    Meals and supplements counted together in one nutrient calculation
  • 33 nutrients
    Protein, fibre, vitamins, minerals, omega-3 and nutrients to limit
  • AI meal photo scan
    Snap a meal; foods are matched to USDA nutrient data
  • Supplement label scan
    Photograph a supplement label to add its vitamins and minerals
  • Barcode scan
    Scan packaged foods by barcode
  • Gap-closing suggestions
    Foods and supplements matched to the nutrients you're short on
  • Daily and weekly views
    See each nutrient as short, on track or over, today and on a 7-day average
  • Adaptive Nutrition Coaching
    MacroFactor uses a sophisticated algorithm that continuously adjusts your calorie and macro targets based on your actual weight trend and intake data, rather than relying on static estimates. This means your nutrition plan evolves with you over time for more accurate results.
  • Comprehensive Food Database
    The app features a large, verified food database with over 1.4 million entries, making it easy to log meals accurately. It also supports barcode scanning and custom food/recipe creation for convenient tracking.
  • Flexible Dietary Approaches
    MacroFactor supports a wide range of dietary styles and goal types, including collaborative mode (where it sets macros for you), coached mode, and manual mode. Users can customize macro ratios, set different targets for different days, and adjust goals easily.
  • Clean, Ad-Free Experience
    The app is completely free of advertisements, which provides a clean and distraction-free user experience. The business model is subscription-based, so users are treated as customers rather than products.
  • Expenditure Tracking and Analytics
    MacroFactor calculates your total daily energy expenditure (TDEE) based on your real-world data rather than generic formulas. It provides detailed analytics dashboards showing trends in weight, nutrition, and expenditure over time, giving users deep insight into their progress.

Possible disadvantages

  • Subscription Cost
    MacroFactor requires a paid subscription to use (after a free trial period), which can feel expensive compared to free calorie-tracking apps like MyFitnessPal or Cronometer's free tier. This may be a barrier for budget-conscious users.
  • Learning Curve
    The app's advanced features, multiple coaching modes, and detailed analytics can be overwhelming for beginners or those who just want simple calorie counting. It takes time to understand how the algorithm works and how to best use the various settings.
  • No Free Tier
    Unlike some competitors that offer a functional free version with optional premium upgrades, MacroFactor does not have a permanent free tier. Once the trial expires, users must subscribe or lose access entirely.
  • Limited Social and Community Features
    MacroFactor focuses heavily on individual tracking and coaching but lacks built-in social features like friend challenges, community forums, or sharing capabilities that some users find motivating in other fitness apps.
  • Requires Consistent Logging for Best Results
    The adaptive algorithm depends on consistent and accurate food logging and regular weigh-ins to function optimally. If users log sporadically or inaccurately, the algorithm's recommendations become less reliable, which can frustrate inconsistent trackers.

Analysis

An editorial look at what each product does well and who it suits.

FillGap.app
MacroFactor

No analysis of FillGap.app yet.

Overall verdict

  • MacroFactor is a highly-regarded nutrition and macro tracking app known for its science-based algorithm that dynamically adjusts your calorie and macro targets based on your actual data, making it one of the best premium options for serious diet tracking.

Why this product is good

  • Uses a smart adaptive algorithm that recalculates your energy expenditure and adjusts targets weekly based on your real logged data
  • Fast and efficient food logging with a large, verified food database and barcode scanning
  • No ads and no aggressive upsells, offering a clean and focused user experience
  • Created by the team behind Stronger By Science, giving it strong evidence-based credibility
  • Flexible dieting approach that lets you set your own pace rather than imposing rigid rules
  • Detailed analytics and trend tracking for weight, nutrition, and expenditure

Recommended for

  • People serious about tracking macros and calories for weight loss, muscle gain, or maintenance
  • Fitness enthusiasts and bodybuilders who want data-driven, adaptive targets
  • Users who value an ad-free, evidence-based experience and are willing to pay a subscription
  • Those who have found other apps too rigid or inaccurate with calorie estimates
  • Anyone who wants precise, dynamic adjustments rather than static one-time calorie goals

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
FillGap.app
MacroFactor
100% 100%
0% 0%
7% 7%
93% 93%
11% 11%
89% 89%
100% 100%
0% 0%

Questions & Answers

As answered by people managing FillGap.app and MacroFactor.

What makes your product unique?

FillGap.app's answer

Most apps log food or supplements, not both. FillGap combines meals and supplements into one nutrient calculation across 33 nutrients, then shows which nutrients are short, on track or over a limit, and what fills each gap. It runs like an investment portfolio for your nutrition: every nutrient is a position to buy, hold or sell.

How would you describe the primary audience of your product?

FillGap.app's answer

People on GLP-1 medications such as Ozempic, Wegovy, Mounjaro or Zepbound who eat much less and need every bite to count. Also women in perimenopause and plant-based eaters, who face specific nutrient gaps. FillGap does not track medication doses; it works alongside a dose tracker and your care team.

What's the story behind your product?

FillGap.app's answer

FillGap was founded by a former investment advisor at CIBC Wood Gundy. After a hyperthyroidism diagnosis at 30, he became a Certified Sports Nutrition Specialist and started treating his nutrition like a portfolio, finding which nutrients were underweight and rebalancing them, and reversed the condition. FillGap turns that approach into an app. Snap what you eat, fill what you need.

Which are the primary technologies used for building your product?

FillGap.app's answer

  • USDA FoodData Central for food nutrient values
  • Dietary Reference Intakes (National Academies) for daily nutrient targets
  • Food and Nutrition Board Tolerable Upper Intake Levels for "over the limit" flags
  • AI image recognition to identify meals and read supplement labels

Who are some of the biggest customers of your product?

FillGap.app's answer

  • People on GLP-1 medications (Ozempic, Wegovy, Mounjaro, Zepbound) who eat less and need every bite to count
  • Women in perimenopause managing changing nutrient needs
  • Plant-based and vegan eaters watching B12, iron, calcium, zinc and omega-3
  • People who take daily supplements and want to see them counted together with their food

Why should a person choose your product over its competitors?

FillGap.app's answer

If you're eating less, on a GLP-1 medication, in perimenopause or eating plant-based, calories don't tell you much. What matters is whether you're getting enough protein, fibre, B12, iron, calcium, vitamin D and omega-3 from food and supplements combined. FillGap shows that in one view and suggests the foods or supplements that close each gap. Targets come from the National Academies' Dietary Reference Intakes and food lookup includes USDA FoodData Central; AI identifies meals and estimates portions, and you review before confirming.

User comments

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Alternatives to FillGap.app and MacroFactor

When comparing FillGap.app and MacroFactor, you can also consider the following products.