U vs Vainly Marquette Method™ NFP
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
U
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U-TEST APP (Has been approved by the Taiwan Ministry of Health and Welfare.) (https://tinyurl.com/ywvdwh2k) ‧ Use with U-TEST APP to take pictures and save records easier. ‧ Store daily picture in your smartphone for a long-term tracking of the crystal pattern changes. ‧ Every woman has her own ovulation curves. ‧ It can help you to monitor the change of your menstrual cycle by sharing the ovulation information.
Vainly Marquette Method™ NFP
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Vainly — A Marquette Method™ Algorithm Tracking App Please note: All features in Vainly are available only with a paid monthly subscription. Start with a 1-month free trial, then choose a paid plan to continue to access all features. Vainly helps those using the Marquette Method of Natural Family Planning (NFP) to take control of reproductive health by tracking cycles, fertility signs, and intimacy events in one secure place. With your subscription, you can: - Log menstrual cycles and hormone readings - Support your Marquette Method NFP practice with evidence-based algorithms to identify fertile and infertile days - Track intimacy events to support family planning goals - View cycle statistics and personalized trends - Securely back up and restore your health data with built-in encryption Why Vainly? - Focused on privacy: your personal health data is encrypted and stored only on your device - Designed for simplicity: clean interface, easy daily logging - Evidence-based: fertility predictions are based on the proven Marquette Method of Natural Family Planning Important Notes Vainly is an independent app and is not affiliated with or endorsed by Marquette University. The Marquette Method requires use of a Clearblue fertility monitor, which is not included with this app. Your health. Your data. Your choice. Vainly never sells or shares your personal data. With local encrypted backup and restore, you stay in control of your reproductive health information. Terms of Service: https://www.vainly.com/terms Privacy Policy: https://vainly.com/privacy License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: U at none against Vainly Marquette Method™ NFP's 2. U also leads on update cadence (every 5 weeks vs every 3 months) and device support (3 vs 1). On price 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. Vainly Marquette Method™ NFP sells 2 in-app purchases, starting at $4.99 per month. U asks for nothing beyond the download.
U ships an update every 5 weeks, Vainly Marquette Method™ NFP every 3 months. The most recent releases landed on September 17, 2026 and September 20, 2026 respectively.
| Parameter | U | Vainly Marquette Method™ NFP |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 293 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | SMARTCHIP MICROELECTRONICS CORP. | Vainly |
In-app purchases
U
No in-app purchases
Vainly Marquette Method™ NFP
- Monthly access1 Month trial$4.991 Month
- Monthly Access1 Month trial$4.991 Month
Questions
Is U free?
Is Vainly Marquette Method™ NFP free?
Do U or Vainly Marquette Method™ NFP have ads?
Which is updated more often, U or Vainly Marquette Method™ NFP?
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