Comparison

Z21Updater vs Bedlog

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Automatic device recognition
  • Direct server updates
  • Simple and functional update process
  • Supports Z21, z21, z21start, smartRail
Read full description

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.

About

Bedlog

Features
Read full description

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

Z21Updater3 screens
Bedlog4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Z21Updater ships an update every 28 months, Bedlog fortnightly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

Scorecard2 real differences · 8 level
Z21Updater versus Bedlog: the parameters behind the verdict, then further details
ParameterZ21UpdaterBedlog
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 28 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, Mac
Requires iOS13.4 — better18.0
Further details — not scored
Size29 MB21 MB
Age rating4+17+
DeveloperModelleisenbahn GmbHAlessandro Emrich

In-app purchases

None

Z21Updater

No in-app purchases

None

Bedlog

No in-app purchases

Questions

Is Z21Updater free?
Z21Updater is free to download, with no in-app purchases.
Is Bedlog free?
Bedlog is free to download, with no in-app purchases.
Do Z21Updater or Bedlog have ads?
Neither Z21Updater nor Bedlog shows ads.
Which is updated more often, Z21Updater or Bedlog?
Z21Updater ships an update every 28 months, and Bedlog fortnightly. Most recently, Z21Updater was updated on November 3, 2026 and Bedlog on November 5, 2026.

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