Comparison

Gain Weight vs FormLapse

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Gain Weight

This app helps users track calorie intake specifically for gaining weight and muscle mass. It offers quick meal logging via photo recognition and provides personalized targets based on user stats and goals. Data is kept private on the device with optional iCloud sync.

Highlights
  • Bulk-first calorie targets
  • AI-powered photo meal logging
  • One-gesture logging for weight and portions
  • Clear home screen with daily progress
  • Trend-based weight tracking
  • Privacy-focused, no account needed
Features
Read full description

StackCal is the calorie tracker built for bulking, not cutting. Most nutrition apps assume you're trying to lose weight. StackCal flips the script. If you're trying to gain muscle, gain mass, or just stop under-eating, StackCal answers the one question that actually matters: "How much more do I need to eat today?" WHY STACKCAL - Bulk-first targets โ€” Personalized BMR, TDEE, and surplus calculations based on your stats and goals. - 5โ€“10 second logging โ€” Snap a photo of your meal and let AI recognize the food and estimate calories. No barcode scanning, no database fumbling. - One dial for everything โ€” Log weight and adjust portion sizes with the same analog dial. One gesture to learn. - Nothing hidden โ€” Today's calories, what you ate, and your weight all live on the home screen. - Trend-based weight โ€” See your moving average instead of fighting daily fluctuations. DESIGNED FOR CLARITY Three rules guide every screen: information is never hidden, the same gesture always means the same thing, and every tap produces a visible response. The result is an app you can use one-handed, post-workout, with sweaty fingers. PRIVACY FIRST - No account required. - Your meals, weight, and profile stay on your device. - Optional iCloud sync uses your private CloudKit container โ€” we never see your data. - No ads. No IDFA. No tracking pixels. SUBSCRIPTION A free tier covers core logging. The subscription unlocks photo-based food recognition and advanced trend analysis. Cancel anytime in iOS Settings. Built for lifters who eat to grow. TERMS OF USE Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FormLapse

Effortlessly track your body transformation with daily photos that automatically align to create a smooth time-lapse. Build a consistent habit with reminders and view your progress alongside weight trends. All your data stays private on your device.

Highlights
  • Auto-aligned time-lapse creation
  • Daily photo habit builder
  • Weight logging and trend overlay
  • On-device data privacy
  • Face blurring for sharing
  • Multiple purchase plans
Features
Read full description

FormLapse turns a quick daily body photo into a smooth, auto-aligned time-lapse of your transformation. โ–  Just snap A simple guide and a ghost of your last photo help you frame roughly the same shot. The app then automatically aligns position, tilt, and scale into a smooth time-lapse. โ–  Build the habit Photos stack up on a calendar. Bulk-import past photos, and a gentle daily reminder with a streak keeps you going. โ–  Weight, together Log your weight to see the trend, and overlay your weight progress or an "N days / +-Y kg" summary on the time-lapse. โ–  All on device Photos and weight stay on your device and nothing is sent anywhere. Blur faces to share with confidence. โ–  Plans (one-time, no subscription) - Free: last 1 month - Standard: 6 months, full-HD quality, before/after compare, speed control, exposure smoothing, Apple Health - Premium: unlimited, weight overlay, fine speed control, and more

Screenshots

Gain Weight4 screens
FormLapse4 screens

Verdict

The call

Gain Weight and FormLapse are too close to call on the numbers: across 7 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Gain Weight sells 2 in-app purchases, starting at $9.99 per month and FormLapse sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Gain Weight ships an update daily, FormLapse every 2 days. The most recent releases landed on September 23, 2026 and September 3, 2026 respectively.

ScorecardNo meaningful differences
Gain Weight versus FormLapse: the parameters behind the verdict, then further details
ParameterGain WeightFormLapse
PriceFreeFree
Positive reviewsโ€”100.0% of reviews
Update frequencyDaily โ€” betterEvery 2 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.0 โ€” better18.0
Further details โ€” not scored
Size17 MB3 MB
Age rating4+4+
DeveloperMoo & CompanyShuhei Yamamoto

In-app purchases

2 purchases

Gain Weight

Subscriptions2
  • StackCal Pro ๆœˆ้กใƒ—ใƒฉใƒณ7 Days trial$9.991 Month
  • StackCal Pro ๅนด้กใƒ—ใƒฉใƒณ7 Days trial$49.991 Year
3 purchases

FormLapse

One-time3
  • ใ‚นใ‚ฟใƒณใƒ€ใƒผใƒ‰$2.99
  • ใƒ—ใƒฌใƒŸใ‚ขใƒ ใธใ‚ขใƒƒใƒ—ใ‚ฐใƒฌใƒผใƒ‰$4.99
  • ใƒ—ใƒฌใƒŸใ‚ขใƒ $7.99

Questions

Is Gain Weight free?
Gain Weight is free to download, with in-app purchases available.
Is FormLapse free?
FormLapse is free to download, with in-app purchases available.
Do Gain Weight or FormLapse have ads?
Neither Gain Weight nor FormLapse shows ads.
Which is updated more often, Gain Weight or FormLapse?
Gain Weight ships an update daily, and FormLapse every 2 days. Most recently, Gain Weight was updated on September 23, 2026 and FormLapse on September 3, 2026.

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