CORE40 vs Stacking Gains
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CORE40
Plan and schedule fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location information. Easily connect to social media pages.
- View class schedules
- Sign up for classes
- Studio location information
- Social media links
- Optimize class booking
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Download the CORE40 App today to plan and schedule your classes! From this mobile App you can view class schedules, sign-up for classes, as well as view the studio’s location information. You can also click through to our Facebook and Twitter pages! Optimize your time and maximize the convenience of signing up for classes from your mobile! Download this App today! Also be sure to check out our website at: www.core40.com
Stacking Gains
Effortlessly track your daily calorie, protein, carb, and fat intake. Log meals quickly, save presets, and set nutrition targets. Enhance your tracking with AI-powered meal descriptions, photo estimates, and barcode scanning with a premium subscription.
- Manual food logging and editing
- Save meals as presets
- Track daily nutrition totals
- Set daily nutrition targets
- AI meal description estimates
- AI photo food estimates
- Barcode scanning
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Macro tracking, For busy people. Stacking Gains helps you keep track of calories, protein, carbs and fat without making food logging another project. Log a meal, save your usual foods, and see how your day adds up. START WITH THE BASICS — FREE • Log food manually and edit entries when you need to. • Save meals as presets and reuse recent foods. • Track your daily totals and look back through your food history. • Set your daily nutrition targets. DO MORE WITH SG PRO • Describe a meal and review an AI estimate before adding it. • Take or choose a food photo for an AI estimate. • Get 100 AI requests per calendar month, shared between text estimates, photos and nutrition reviews. Your allowance resets on the first of the month (UTC). • Scan supported food barcodes and check the serving size. • Save multiple nutrition modes and switch targets for different days. • Connect a compatible AI assistant to your food log, with permissions you choose and access you can revoke. BRING YOUR OWN ASSISTANT Use the setup guide to connect a supported assistant through a custom connection. Availability depends on the assistant and your plan with that provider. SG Pro does not include a separate AI assistant subscription. Public connector-directory availability may vary. CHECK THE ESTIMATE AI estimates are a starting point, not a measurement. Review ingredients, portions and macros before saving. Stacking Gains is for general nutrition tracking and is not medical advice. FOUNDING PRICING SG Pro is available monthly or annually. Eligible new subscribers can start with a 7-day free trial. If you choose the annual plan, the trial automatically becomes a paid annual subscription unless you cancel at least 24 hours before the trial ends. If you choose monthly, it becomes a paid monthly subscription. The app and Apple purchase sheet show your price, billing period and trial eligibility before you confirm. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple account subscription settings. Any unused portion of a free trial is forfeited when you purchase a subscription, where applicable. Canceling stops renewal; access continues through the current paid or trial period, subject to Apple's terms. Existing early users retain their original barcode and mode features, plus their included monthly AI allowance. SG Pro adds the expanded allowance and assistant connections. Privacy: https://stackinggains.com/privacy/ Terms: https://stackinggains.com/terms/ Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: https://stackinggains.com/help/
Screenshots
Verdict
The clearest difference is rating: Stacking Gains at 5.0 against CORE40's 2.3. Stacking Gains also leads on review sentiment (100% vs 60%). CORE40's advantage is in-app purchases (none vs 4) and ratings volume (9 vs 3). On price, update cadence, ads and device support 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
Both are free to download. Stacking Gains sells 4 in-app purchases, starting at $4.99 per month. CORE40 asks for nothing beyond the download.
Stacking Gains holds the better App Store score, 5.0 against 2.3. Both are backed by a comparable volume of ratings — 9 and 3 respectively. Written reviews point the same way: 60% of CORE40's written reviews are positive against 100% of Stacking Gains's.
CORE40 ships an update every 5 weeks, Stacking Gains every 4 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | CORE40 | Stacking Gains |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (9 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 — better | 3 |
| Update frequency | Every 5 weeks | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 195 MB | 59 MB |
| Age rating | 4+ | 4+ |
| Developer | CORE40 Studios | Joshua Adams |
Customer experience
CORE40
Stacking Gains
In-app purchases
CORE40
No in-app purchases
Stacking Gains
- SG Pro Monthly14 Days trial$4.991 Month
- SG Pro Monthly7 Days trial$4.991 Month
- SG Pro Annual14 Days trial$40.001 Year
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- SG Pro Annual7 Days trial$40.001 Year









