Period or Not vs Grava
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Period or Not
This app tracks your menstrual cycle and provides smart predictions for your period and bleeding duration. It prioritizes user privacy by storing all data locally on your device, with no cloud sync or tracking. You can export your data at any time.
- Local data storage
- Smart cycle predictions
- Bleeding duration predictions
- Data export and backup
- Optional calendar sync
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Your cycle data belongs to you. Not us. Not advertisers. Not anyone. Period or Not is the period tracker built for people who value their privacy as much as their health. How it works: Log your period Get smart cycle & bleeding duration predictions Export your data anytime (Backup & Restore) Sync to Apple or Google calendar (optional) Why we're different We went Full Local. Your data lives 100% on your device. We don't have servers, and we don't have a database of your cycles. Unlike usage of "secure cloud storage" in other apps, we chose Zero Cloud. Nothing leaves your phone unless you export it. No analytics or behavioral tracking No data selling (we literally can't, we don't have your data) Built by a woman, for women. This isn't a VC-backed data harvesting machine. It's an indie app made by someone who actually uses it and gives a damn about your privacy. In a world where period apps have made headlines for privacy breaches, we built something different. Your health data is yours. Period.
Grava
Effortlessly track your food intake by simply taking a photo. This app uses AI to estimate calories and macros, offering honest ranges rather than precise, potentially inaccurate numbers. Set personalized daily targets based on your goals and easily view your progress over time.
- Log food with photos
- AI calorie and macro estimation
- Honest calorie range estimates
- Personalized daily targets
- Offline backup with Apple Intelligence
- Syncs across Apple devices
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Grava turns a photo of your food into calories and macros in seconds. No searching food databases, no weighing portions, no math — point your camera, confirm, done. Under the hood, Google's Gemini analyzes your food photos with state-of-the-art accuracy, and Apple Intelligence steps in as an on-device backup — so Grava keeps working even when you have no connection. LOG FOOD IN SECONDS - Snap a photo of your meal - Add a quick note for extra accuracy - Import a photo or screenshot — menus, nutrition labels, and delivery-app orders all work - Or just type what you ate HONEST ESTIMATES, NOT FAKE PRECISION No app can know your burrito had exactly 743 calories — and any app that claims to is guessing. Grava shows you the honest range instead. Pick how to count it once — top of the range for cutting, middle for maintenance, bottom for bulking — and Grava applies it automatically. Every value can be edited, and nothing is logged until you confirm. You can even snap a photo just to check a meal without logging it. TARGETS BUILT AROUND YOU A 30-second setup (sex, birth year, height, weight, activity level) computes your maintenance calories using the Mifflin-St Jeor equation, plus targets for losing or gaining 1–2 lb per week. Every day shows exactly where you stand: deficit or surplus. MADE FOR REAL LIFE - Night owl? End your calorie day after midnight (up to 6 AM) so late-night snacks count toward the right day — Grava even offers this automatically if it notices you logging late - See your history as a line chart, calendar, or list, with weekly per-day averages and full macro breakdowns - Sign in with Apple and your history syncs across iPhone, iPad, and Mac GRAVA PLUS Photo estimates from Google's Gemini come with Grava Plus, a monthly or yearly subscription, and your first month is free with no card needed. Without Plus, your log, history, targets and companions stay free, and devices with Apple Intelligence can still estimate on-device (much less accurate and slower). Payment is charged to your Apple Account. Plus renews automatically unless you cancel at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Terms of Use: https://gravacal.com/terms Privacy Policy: https://gravacal.com/privacy Download Grava and log your next meal in the time it takes to take a picture.
Screenshots
Verdict
The clearest difference is review sentiment: Grava at 100% against Period or Not's 50%. Grava also leads on rating (5.0 vs 3.0). Period or Not's advantage is iOS requirement (16.4 vs 26.5). On price, ratings volume, update cadence and ads 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. Period or Not sells 1 one-off in-app purchase and Grava sells 10 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Grava holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 50% of Period or Not's written reviews are positive against 100% of Grava's.
Period or Not ships an update every 3 weeks, Grava every 2 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.
| Parameter | Period or Not | Grava |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (3 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.4 — better | 26.5 |
| Further details — not scored | ||
| Size | 44 MB | 26 MB |
| Age rating | 9+ | 12+ |
| Developer | Antonija Pek | EDSON RUSSELL AYLLON |
Customer experience
Period or Not
Grava
In-app purchases
Period or Not
- Super Turbo$3.99
Grava
- Grava Plus Monthly$4.991 Month
- Grava Plus Yearly$39.991 Year
- Bread$1.99
- Fish$1.99
- Dolphin$1.99
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- Banana$1.99
- Shark$1.99
- Mushroom$1.99
- Sushi$1.99
- Platypus$1.99









