Comparison

Sentry Motion Detector Camera vs Rewind

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

Head to head
About

Sentry Motion Detector Camera

Transform an old phone into a dark-optimized motion-triggered security camera. It records clips when movement is detected and saves them directly to your device's photo library, offering a private and offline monitoring solution.

Highlights
  • Motion-triggered recording
  • Night vision capabilities
  • Records to photo library
  • Offline operation
  • No account or cloud needed
  • Screen stays dark during use
Features
Read full description

Sentry turns a phone you already own into a motion-triggered camera that works in the dark. Set it down, arm it, and walk away. When something moves, it records. When the movement stops, it stops. The clips land in your photo library, ready to review whenever you want. It records for you to watch later. It is not a live video feed — you are not watching a stream, you are collecting what happened while you were not there. WHAT IT IS FOR Find out what your dog does to the sofa while you are out. See which animal has been visiting the garden after dark. Watch how a sleeping cat actually gets from one end of the room to the other. Point a spare phone at the garage overnight and check the footage in the morning. BUILT FOR THE DARK Most cameras give up when the light does. Sentry changes how the sensor reads a dark scene: it picks a binned format that gathers far more light per pixel, extends the shutter ceiling, and lets the frame rate drop so the shutter has time to stay open. The result is usable footage in rooms where the standard camera returns noise. The screen stays dark while it runs. Monitoring goes on for hours, often overnight, and a bright display would waste battery and light the room you are trying to film. RECORDING IS ALWAYS VISIBLE A red dot sits in the corner of the screen for as long as recording lasts. There is no setting to turn it off, because there should not be one. Photos play the standard iPhone shutter sound. NOTHING LEAVES THE DEVICE No account. No sign-up. No cloud. No subscription. Sentry contains no networking code at all — recordings are written straight to your photo library and stay there. It works with the phone in airplane mode. HOW IT WORKS 1 tap — photo 2 taps — start recording 3 taps — arm motion detection, which begins after 5 seconds and stops 1 second after movement ceases Swipe up — cycle the rear lenses Swipe down — front camera Two fingers, 3 seconds — stop Shake — settings Long sessions are saved in chunks as they record, so a flat battery costs you minutes rather than hours. RESPONSIBLE USE Record only where you have the right to. Laws on recording people vary by country and by state, and some places require the consent of everyone present. Sentry shows a recording indicator that cannot be disabled and plays the shutter sound on photos, so anyone who looks at the device can tell it is capturing. REQUIREMENTS iPhone and iPad running iOS 18 or later. Extended recording and motion detection use significant battery — keep the device on a charger for long sessions. Video files are large, so check free space before a long run.

About

Rewind

Features
Read full description

Rewind redonne vie à votre galerie photos en la parcourant de manière aléatoire, comme un feed TikTok tourné vers vos propres souvenirs. Chaque jour, faites défiler votre galerie comme un fil d'actualité : redécouvrez des moments capturés il y a des mois ou des années, partagez-les, sauvegardez-les dans un album dédié, ajoutez-les à vos favoris, ou triez ceux dont vous n'avez plus besoin. Fonctionnalités • Scroll vertical intuitif dans toute votre galerie • Double tap pour ajouter un souvenir à vos favoris • Swipe gauche ou bouton pour envoyer à la corbeille • Partage en un tap • Sauvegarde directe dans un album "Rewind" • Vos photos ne quittent jamais votre appareil Rewind Pro • Scrolls illimités sans quota quotidien • Suppressions illimitées (swipe ou bouton) • Favoris illimités • Filtre par albums : choisissez ce qui apparaît dans votre feed • Filtres Photos / Vidéos • Outils Nettoyage : Faites le tri dans vos médias mois par mois • Accès aux statistiques d'usage de l'application

Screenshots

Sentry Motion Detector Camera3 screens
Rewind4 screens

Verdict

The call

The clearest difference is in-app purchases: Sentry Motion Detector Camera at none against Rewind's 3. Rewind's advantage is update cadence (weekly vs fortnightly) and iOS requirement (15.1 vs 18.0). On price, ads 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. Rewind sells 3 in-app purchases, starting at $2.99 per month. Sentry Motion Detector Camera asks for nothing beyond the download.

UpkeepUpdate frequency

Sentry Motion Detector Camera ships an update fortnightly, Rewind weekly. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 5 level
Sentry Motion Detector Camera versus Rewind: the parameters behind the verdict, then further details
ParameterSentry Motion Detector CameraRewind
PriceFreeFree
Positive reviews0.0% of reviews—
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.015.1 — better
Further details — not scored
Size0 MB46 MB
Age rating4+4+
DeveloperBigBalli Consulting llcJoel HOUINSAVI

In-app purchases

None

Sentry Motion Detector Camera

No in-app purchases

3 purchases

Rewind

Subscriptions2
  • Rewind Pro - Mensuel7 Days trial$2.991 Month
  • Rewind Pro - Annuel7 Days trial$12.991 Year
One-time1
  • Pro à vie$22.99

Questions

Is Sentry Motion Detector Camera free?
Sentry Motion Detector Camera is free to download, with no in-app purchases.
Is Rewind free?
Rewind is free to download, with in-app purchases available.
Do Sentry Motion Detector Camera or Rewind have ads?
Neither Sentry Motion Detector Camera nor Rewind shows ads.
Which is updated more often, Sentry Motion Detector Camera or Rewind?
Sentry Motion Detector Camera ships an update fortnightly, and Rewind weekly. Most recently, Sentry Motion Detector Camera was updated on October 14, 2026 and Rewind on October 25, 2026.

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