Doubling Back vs BarLock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Doubling Back
This utility app allows you to precisely measure walking or running distances. You can start and stop tracking at any point, and it calculates the total distance covered only during the measured segments.
- Measure walking/running distance
- Start and stop measurement
- Calculate distance for selected portions
- iPhone and iPad compatible
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Doubling Back is an iPhone application for measuring your walking or running distance. What does Doubling Back offer that other pedometer apps do not? You can start and stop the measurement, and when you are finished, Doubling Back will show you the total distance for just the portions of the walk or run that you chose to measure.
BarLock
This app helps you wake up by requiring you to scan a unique barcode or QR code from an item across the room to turn off your alarm. It prevents snoozing and ensures you physically get out of bed.
- Barcode and QR code alarm missions
- Exact-code matching
- Full-screen Scan to Stop
- Wrong-item protection
- Wake-up check after dismissal
- No ads or tracking
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You don't have a waking-up problem. You have a turning-off-the-alarm problem. BarLock keeps ringing until you get up and scan a barcode across the room. No snooze. No negotiating. Pick an alarm time, scan a barcode or QR code on something that lives away from your bed, and that exact code becomes the only way to stop the alarm. Toothpaste, coffee, medication, a notebook. Anything that forces you to stand up. HOW IT WORKS 1. Create an alarm. 2. Scan a barcode or QR code on an item away from bed. 3. Name the item. 4. When the alarm fires, walk to the item and scan it. 5. Wrong item, wrong code, or no scan? The alarm keeps ringing. WHY IT WORKS Most alarms die from one tap while you are still half asleep. BarLock moves the off switch across the room. By the time you have scanned, you are on your feet, and getting on your feet is the whole battle. BUILT FOR • Heavy sleepers • Students with early classes • Shift workers • Serial snoozers • Anyone who turns off alarms without remembering it WHAT YOU GET • An alarm only your chosen barcode or QR code can stop • A full-screen Scan to Stop screen the moment it rings • Wake-Up Check. BarLock rings again a little later to make sure you stayed up. • Backup Alerts. Opened the alarm but never finished the scan? It comes back. • Lock Window. In the minutes before it rings, the alarm can't be edited, paused, or deleted without a scan. 2 a.m. you can't sabotage 7 a.m. you. • Tiptoe Mode. A few quiet seconds after you press Stop, enough to reach your item without waking the house. Miss the scan and the volume comes back. • Stickers. Keep getting up and you'll earn them, in holographic foil. • Alarm sounds built to cut through deep sleep • Everything stays on your phone. No account, no ads, no tracking. WHAT'S INCLUDED One barcode alarm, one sound, and the standard wake-up rules. Enough to fix tomorrow morning. BARLOCK PRO Pro is a one-time purchase. No subscription. • Unlimited alarms for weekdays, naps, travel, and backups • Tiptoe Mode • Your own settings for Lock Window, Backup Alerts, and Wake-Up Check • Your sticker collection, revealed in full holographic color • Every alarm sound in the app PRIVACY Your alarms and scanned codes never leave your device. No account, no advertising, no tracking. Stop snoozing. Scan to stop.
Screenshots
Verdict
The clearest difference is rating: Doubling Back at 3.7 against BarLock's 3.0. Doubling Back also leads on in-app purchases (none vs 1) and device support (3 vs 1). BarLock's advantage is update cadence (every 3 days vs every 13 months). On price, ratings volume 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. BarLock sells 1 one-off in-app purchase. Doubling Back asks for nothing beyond the download.
Doubling Back holds the better App Store score, 3.7 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively.
Doubling Back ships an update every 13 months, BarLock every 3 days. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.
| Parameter | Doubling Back | BarLock |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | 3.0 (2 ratings) |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 13 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 26.1 |
| Further details — not scored | ||
| Size | 9 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Terry NIGHTINGALE | CODE IN MOTION SRL |
Customer experience
Doubling Back
BarLock
In-app purchases
Doubling Back
No in-app purchases
BarLock
- BarLock PRO Lifetime$7.49





