SinceWhen vs Stemly Convert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SinceWhen
Track the time elapsed since important events, from personal care to home maintenance. Get gentle reminders for when things are due next, with smart predictions based on your logging habits. Designed for real life, it offers a private and guilt-free way to manage recurring tasks.
- Log events with one tap
- Smart predictions for due dates
- Widgets for Home and Lock Screen
- Siri and Shortcuts integration
- Multi-day event tracking
- Calendar and chart visualizations
- Private by design, no account needed
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Not everything is a daily habit. SinceWhen tells you how long it's been since the last haircut, oil change, vet visit, or dose, and when it's likely due next. One tap to log. No streaks. No guilt. No account. HOW IT WORKS • Name something you do now and then • Tap to log it, from the app, a widget, your Lock Screen, or Siri • SinceWhen learns your rhythm and shows what's due BUILT FOR REAL LIFE • Home & car: AC filters, oil changes, smoke detectors, deep cleans • Plants & pets: watering, fertilizing, flea treatments, vet visits • Health & self-care: as-needed medication, vitamins, skincare, dentist • Life admin: haircuts, calling family, reviewing subscriptions • ADHD-friendly: a zero-shame history for time blindness SMART, GENTLE PREDICTIONS SinceWhen studies the gaps between your logs and says things like "Usually every 6 weeks" and "Expected tomorrow". Pattern aware skips one-off long gaps, like a week away, and follows your real routine. Optional nudges arrive only when something is actually due, and you can log straight from the notification. MULTI-DAY EVENTS Tap once to start, tap again to end. Trips, sick days, and cycles are counted as Day 1, Day 2, and so on, with the full duration shaded on your charts. LOG IT IN SECONDS • Home Screen and Lock Screen widgets • Undo an accidental tap right where you made it • Siri and Shortcuts: "Hey Siri, log haircut" • Add a note, or backdate a log in a couple of taps EVERYTHING AT A GLANCE • Calendar with a ring on the next expected day • Interval and monthly charts • Categories with their own insights • Pause an event while you're away so predictions stay honest • Grid or list, pin what matters, dark mode, iPhone and iPad PRIVATE BY DESIGN No accounts, no ads, no analytics. Your timeline stays on your device and in your own iCloud. Export everything as JSON any time. FREE TO START Your first 3 events are free forever with every core feature. SINCEWHEN PRO Unlimited events, iCloud sync and backup, Siri and Shortcuts, and JSON export. • Monthly and Yearly: Family Sharing included • Lifetime: pay once, own it forever (Family Sharing not included) Available in English, German, Japanese, Spanish, French, Portuguese, Korean, and Italian. Privacy Policy: https://devapt.com/sincewhen/privacy Terms of Use: https://devapt.com/sincewhen/terms
Stemly Convert
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Convert audio files anywhere. Stemly Convert is a fast and powerful audio converter for iPhone and iPad. Convert individual files, complete folders or entire folder trees while preserving the original folder structure automatically. Whether you’re preparing stems for a live show, organizing sample libraries or converting audio files for sharing, Stemly Convert helps you get the job done quickly and reliably. FORMATS • Input: WAV, AIFF, FLAC, M4A, MP3 • Output: WAV, AIFF, FLAC, M4A FEATURES • Convert audio files in seconds • Batch convert multiple files and folders • Process entire folder trees automatically • Preserve nested folder structures • Choose output sample rate and bit depth • Fast offline conversion directly on your device • Simple, distraction-free interface • No subscription, no cloud uploads PERFECT FOR • Musicians • Producers • Audio engineers • Podcasters • Content creators • Sample library management WHY STEMLY CONVERT • Batch conversion for files and folders • Preserves your original folder organization • Works completely offline • Universal Purchase included Part of the Stemly ecosystem by Bandi Studio.
Screenshots
Verdict
The clearest difference is price: SinceWhen at Free against Stemly Convert's $1.99. SinceWhen also leads on update cadence (weekly vs every 3 months). Stemly Convert's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement 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
SinceWhen is free to download; Stemly Convert costs $1.99 up front. SinceWhen sells 3 in-app purchases, starting at $4.99 per month. Stemly Convert asks for nothing beyond the download.
SinceWhen ships an update weekly, Stemly Convert every 3 months. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | SinceWhen | Stemly Convert |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.4 (14 ratings) — better | — |
| Positive reviews | 87.5% of reviews | — |
| Number of ratings | 14 — better | — |
| Update frequency | Weekly — better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Basharath Shaik | Andrzej Bandosz |
In-app purchases
SinceWhen
- SinceWhen Pro + Family (Monthly)$4.991 Month
- SinceWhen Pro + Family (Yearly)$19.991 Year
- SinceWhen Pro (Lifetime)$39.99
Stemly Convert
No in-app purchases









