Comparison

Gain Weight vs FormLapse

Price, ratings, monetisation and update history for both apps, side by side — 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 — Personalized BMR, TDEE, and surplus calculations based on your stats and goals. - 5–10 second logging — 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 — Log weight and adjust portion sizes with the same analog dial. One gesture to learn. - Nothing hidden — Today's calories, what you ate, and your weight all live on the home screen. - Trend-based weight — 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 — 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

Take a quick body photo every day and watch your progress turn into a smooth timelapse video. FormLapse auto-aligns position, tilt and scale, so you don't need to line up a ghost overlay or use a tripod. Casual shots are fine. Your photos never leave your iPhone: no network connection, no account. Weight loss, cutting, bulking, getting in shape: changes you can't see in the mirror day to day become obvious when weeks and months of progress pics play back to back. FormLapse makes that as easy as possible. ■ Auto-aligned timelapse ・Automatically corrects the position, tilt and scale of each daily photo ・No need to match an outline when shooting. Just take the photo as usual ・Creates a smooth body transformation timelapse ・Optionally show your weight on the video ■ Before & after ・Slider or side-by-side comparison ・9:16 share card for social media ・Pinch to zoom and fine-tune the position ■ Weight log ・Log your weight right after taking the photo (or later) ・Weight graph to see your trend ・Calendar shows the days you took photos ■ Privacy ・Everything is processed on your device, with no network connection ・No account required ・Face blur for worry-free sharing ■ Stay consistent ・Photo reminders ・Home Screen widget ■ Plans (one-time purchase, no subscription) [Free] ・Timelapse of the last month ・Standard quality [Standard] ・Timelapse of the last 6 months ・Full HD quality ・Save and share before/after images ・Playback speed control ・Brightness evening ・Apple Health integration ・Auto-save [Premium] ・Unlimited timelapse span ・Weight graph overlay ・Fine playback speed control ※ Videos on every plan include a small FormLapse mark. ※ One-time purchase, not a subscription.

Screenshots

Gain Weight4 screens
FormLapse4 screens

Verdict

The call

The clearest difference is update cadence: Gain Weight at daily against FormLapse's every 3 days. On price, ads, in-app purchases and monetization model there is nothing between them.

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

CostPrice · In-app purchases · Ads · 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 3 days. The most recent releases landed on October 2, 2026 and October 15, 2026 respectively.

Scorecard1 real difference · 9 level
Gain Weight versus FormLapse: the parameters behind the verdict, then further details
ParameterGain WeightFormLapse
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyDaily — betterEvery 3 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.0 — better18.0
Further details — not scored
Size17 MB4 MB
Age rating4+4+
DeveloperMoo & CompanyShuhei Yamamoto

In-app purchases

2 purchases

Gain Weight

Subscriptions2
  • StackCal Pro 月額プラン7 Days trial$9.991 Month
  • StackCal Pro 年額プラン7 Days trial$49.991 Year
3 purchases

FormLapse

One-time3
  • スタンダード$2.99
  • プレミアムへアップグレード$4.99
  • プレミアム$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 3 days. Most recently, Gain Weight was updated on October 2, 2026 and FormLapse on October 15, 2026.

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