Lact8 vs Sugar Tracker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lact8
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Lact8 helps athletes identify their lactate thresholds (LT1 and LT2) from step test data and calculate personalized training zones. Features: • Record lactate, heart rate, and power/pace from step tests • Automatic threshold detection using proven methods • Multiple zone systems (3-Zone, 7-Zone Touretski, 8-Zone Couzens) • Track threshold progression over time • Export data as CSV, JSON, or Markdown Perfect for cyclists, runners, and triathletes who want data-driven training zones based on their own physiology.
Sugar Tracker
This app uses AI to estimate the sugar content in grams of your food by analyzing photos. Review and adjust the estimates before logging your intake to track your daily sugar consumption and reach personal goals.
- AI food photo analysis for sugar estimation
- Manual review and adjustment of sugar grams
- Daily sugar intake tracking and goal setting
- Calendar view of sugar entries
- Privacy-focused design with on-device data
- Supports home-cooked, restaurant, and packaged foods
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How much sugar did you actually eat today? Most of us have no idea — it hides in bread, sauces, coffee drinks, and "healthy" snacks. Sugar Tracker gives you the answer in seconds: snap a photo of your food, and AI estimates the sugar in grams. Review it, adjust it, log it. Done. No calorie counting. No searching endless food databases. Just sugar — the one number you're trying to change. HOW IT WORKS 1. Snap a photo of your meal, snack, or drink — or pick one from your library. 2. The AI identifies each item on the plate and estimates its sugar in grams, with a likely range and a confidence level. 3. Review before saving — adjust the food, portion, or grams. You always make the final call. 4. Watch your daily total. Set a personal gram goal, or simply observe your intake without one. WHY SUGAR TRACKER - Honest estimates, not false precision. Every result shows a likely range and a confidence level, and nothing is logged until you confirm it. - Built for real food. Home-cooked plates, restaurant meals, packaged snacks — no barcode required. For packaged foods, add an optional photo of the nutrition label for a clearer estimate. - Manual logging, always. Already know the grams? Type them in — no photo needed. - Your sugar, day by day. A simple calendar shows every day's total and entries. Backdate an entry or fix one anytime. - A goal that's yours. Sugar Tracker doesn't prescribe a target. Choose your own daily reference point — or track without one. - Sugar only, on purpose. If full calorie trackers feel like a second job, this is the focused alternative: one number, logged in seconds. CUTTING BACK ON SUGAR? Whether you're doing a no-sugar challenge, starting a sugar detox, taming a sweet tooth, or just curious what's hiding in your food — you can't change what you don't measure. Seeing the grams is the first step to eating less of them. PRIVACY BY DESIGN - Only the photos you choose are sent for analysis — your food photo and an optional label photo, nothing else. - Your age and gender stay on your device and are never sent with your photos. - Only confirmed entry thumbnails are kept, on your device. Delete an entry and they're gone. SUGAR LENS PLUS Sugar Tracker requires a Sugar Lens Plus subscription, which includes everything the app offers: unlimited AI food analysis, your complete sugar calendar and history, and full editing control. Plus is a monthly auto-renewing subscription, with a free trial where offered. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Any unused portion of a free trial is forfeited when you purchase a subscription. Sugar estimates are wellness guidance only. Sugar Tracker is not a medical device and must not be used for insulin dosing, diagnosis, or other medical decisions. Start seeing the sugar in your food — download Sugar Tracker and take a clearer look at what you eat. Terms of Use: https://sugarintaketracker.com/terms-of-use Privacy Policy: https://sugarintaketracker.com/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: Lact8 at none against Sugar Tracker's 2. 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. Sugar Tracker sells 2 in-app purchases, starting at $3.99 per 7 days. Lact8 asks for nothing beyond the download.
Lact8 ships an update weekly, Sugar Tracker every 3 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.
| Parameter | Lact8 | Sugar Tracker |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Subscription |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 3 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | BEN REEVE | Iaroslav Morgunov |
In-app purchases
Lact8
No in-app purchases
Sugar Tracker
- Weekly Subscription3 Days trial$3.997 Days
- Annual Subscription$19.991 Year









