Z21Updater vs Bedlog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Z21Updater
Easily update your Z21, z21, z21start, and smartRail devices. The app automatically detects connected hardware and fetches the latest firmware directly from the server when online, simplifying the update process.
- Automatic device recognition
- Direct server updates
- Simple and functional update process
- Supports Z21, z21, z21start, smartRail
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This app allows you to conveniently keep your Z21, z21, z21start and smartRail always up to date. The connected device is automatically recognized by the app. New updates are directly queried from the server when connected to the Internet thus the update process is very simple and functional.
Bedlog
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Bedlog is the private app to keep track of your dates and partners — with profiles, a world map, stats and an honest take on your sexual health. Beautifully designed, secure, and just for you. REMEMBER & ORGANISE • A profile per person: photo gallery, short bio, origin, tags. • Note what you practised — add your own entries too. • Find everyone again: search, sort, group by country. YOUR WORLD MAP • See at a glance which countries your contacts are from, grouped by continent. STAY HEALTHY • Log your STI tests and get reminders. • If needed, discreetly see who to notify within the relevant window. • A reminder tool — not medical advice. LEARN • Clear basics on safer sex, testing, consent, PrEP/PEP. • Anatomy & pleasure, STIs, and where to find counselling. PRIVATE BY DESIGN • Everything stays on your device — optional private iCloud sync (CloudKit). • Face ID / passcode lock. No ads, no tracking, no data selling. • CSV import/export and full backups. For adults who want a mindful, healthy, private love life. Remember. Protect. Explore. Note: Content in “Learn” is for information only and is not a substitute for medical advice.
Screenshots
Verdict
The clearest difference is update cadence: Bedlog at fortnightly against Z21Updater's every 28 months. Z21Updater's advantage is iOS requirement (13.4 vs 18.0). 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. Neither carries in-app purchases, so what you see is what you pay.
Z21Updater ships an update every 28 months, Bedlog fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Z21Updater | Bedlog |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 28 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Mac |
| Requires iOS | 13.4 — better | 18.0 |
| Further details — not scored | ||
| Size | 29 MB | 21 MB |
| Age rating | 4+ | 17+ |
| Developer | Modelleisenbahn GmbH | Alessandro Emrich |
In-app purchases
Z21Updater
No in-app purchases
Bedlog
No in-app purchases









