sprig vs Calla
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
sprig
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Sprig is cycle tracking, made with care. Chart your cycle one day at a time with a calm, clear companion for Creighton, natural family planning (NFP), and fertility awareness. Log what you observe—mucus, bleeding, and other daily details—without turning your chart into a puzzle. See your year at a glance, understand where you are in your cycle, and return to the details when you need them. Your chart stays on your device. Sprig is designed to keep your fertility data private, understandable, and in your hands. Made for people who want a gentler way to chart: • Simple daily observations • Clear fertile and infertile context • A full-year view of your chart • Private notes and optional details • On-device data, with export when you choose Sprig is an informational charting tool, not medical advice. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Calla
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Calla is a private perimenopause and menopause tracker for iPhone. Keep a daily diary of symptoms, hot flashes, sleep and hormone replacement therapy (HRT). Calla Pro adds insights and PDF reports for your next medical appointment. MADE FOR THIS STAGE • 25+ symptoms with severity, plus your own custom symptoms and notes • One-tap hot flash log with time of day, night sweats and sleep • Works whether your periods are regular, irregular or gone – including after a hysterectomy or with an IUD • Tracks the gap since your last period and flags bleeding after 12 months HRT, PROPERLY • Patches, gels, sprays, tablets, pessaries, testosterone and more • Daily, twice-weekly, weekly and cyclical schedules with reminders that respect Focus modes • Log dose changes and see how your symptoms compared before and after SEE THE PATTERNS • Calendar heatmap and 7/30/90-day trends • Which triggers (alcohol, caffeine, stress, poor sleep) go with worse days • Adherence vs symptoms, hot flash frequency by time of day BRING PROOF TO YOUR APPOINTMENT • PDF report with charts, your HRT regimen and adherence, bleeding pattern, labs and your questions • Share from the app or print PRIVATE BY DESIGN • No account, no sign-up, no email • Data stays on your iPhone; optional iCloud backup and full export (CSV, JSON, PDF) • Optional Face ID lock • Writes symptoms to Apple Health and imports your cycle history Daily logging, medication reminders and JSON/CSV exports are available without a subscription. Calla Pro unlocks Insights and creation of PDF reports. Calla Pro is available as a subscription: $39.99/year after a 7-day free trial, or $7.99/month. Payment is charged to your Apple ID account. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in Settings › Apple ID › Subscriptions. Calla is a tracking tool, not a medical device. It does not diagnose or treat conditions. Always talk to your healthcare provider about symptoms and treatment. Privacy Policy: https://callatracker.app/privacy Terms of Use: https://callatracker.app/terms Support: https://callatracker.app/support
Screenshots
Verdict
The clearest difference is update cadence: Calla at every 4 days against sprig's fortnightly. Calla also leads on iOS requirement (16.4 vs 26.0). On price, ads, in-app purchases 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. sprig sells 3 in-app purchases, starting at $3.99 per month and Calla sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.
sprig ships an update fortnightly, Calla every 4 days. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.
| Parameter | sprig | Calla |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 26.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 17 MB | 69 MB |
| Age rating | 17+ | 12+ |
| Developer | CLEMENTE JOS ORTUZAR ORELLANA | Arman Malkhasyan |
In-app purchases
sprig
- Sprig Plus Monthly14 Days trial$3.991 Month
- Sprig Plus Yearly14 Days trial$29.991 Year
- English$49.99
Calla
- Calla Pro - Monthly$7.991 Month
- Calla Pro - Yearly7 Days trial$39.991 Year









