Comparison

Discount Plus vs Sentry Driver

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

Head to head
About

Discount Plus

Features
Read full description

概要+++++++++++++++++++++++++++++++ この価格は何割引? こんなことを思ったことはありませんか。 しかも、それがわかりやすい操作であれば、 簡単に何割引かを確認することができます。 また、割引後の価格が割引前と比較して 何パーセントなのかも、 シンプル操作で確認することができます。 そして、操作画面にも簡単な 操作手順も表示されます。 もちろん、通常の電卓としても お使いいただけます。 操作方法++++++++++++++++++++++++++ 価格交渉などをしている場合、 提示されている数値から何パーセント引きに したいのかを知りたい場合。 例)100の20%引きを求めたい場合の操作。 100 -> 「の」キー -> 20 -> %キー -> ー(マイナスキー)-> =(イコールキー) 例)100の20%割増を求めたい場合の操作。 100 -> 「の」キー -> 20 -> %キー -> +(プラスキー) -> =(イコールキー) 例)価格変更があった場合、新価格が旧価格の 何パーセント引きになっているかを求める場合。 新価格が180、旧価格が200の場合の操作。 180 -> 「は」キー -> 200 -> 「の」キー -> %キー -> =(イコールキー)

About

Sentry Driver

Monitor Tesla vehicles remotely for speeding, accidents, and risky driving behavior. Receive real-time alerts and review trip history. Ideal for new drivers, family cars, or fleet management.

Highlights
  • Automatic owner detection
  • Real-time safety alerts
  • Curfew and zone monitoring
  • Trip history and tracking
  • Multi-vehicle support
  • Official Tesla Fleet API integration
Features
Read full description

Your teenager just borrowed the car. A friend is driving it for the weekend. Now you'll know if something goes wrong. Sentry Driver detects when you're not the one driving and alerts you to speeding, possible accidents and risky driving, using Tesla's official Fleet API. Other drivers don't need to install anything. Just let them know the car is monitored. --- OWNER DETECTION • Bluetooth Detection — Detects whether your phone is in the car, so alerts go out only when someone else is likely driving • No Manual Switching — Nothing to turn on or off • Owner-Aware Rules — Your own drives don't trigger alerts --- SAFETY ALERTS • Speeding Alerts — Notifications when your limits are exceeded • Possible Accident Alerts — Critical alert when unusually strong forces suggest a collision • Parked Impact Alerts — Get alerted if the car may have been hit while parked • Harsh Braking & Rapid Acceleration — Spot risky driving patterns • Critical Alert Override — Important alerts can bypass Do Not Disturb --- DRIVING HOURS & ZONES • Driving Hours — Get alerted when the car is driven outside the times you set • Choose the Days — Apply driving hours only on the days you pick • Geographic Zones — Get alerted when the car enters or leaves areas you define --- TRIP HISTORY • Drive Logs — Route, distance and duration for every trip • Live Location — See where your Tesla is on the map • Route Replay — View the path of any drive • Event Timeline — Driving events shown where they happened • Weekly, Monthly & Yearly Stats — See your driving over any period --- MULTIPLE VEHICLES • All Your Teslas in One App — Per-vehicle rules and alert sounds • Works With Model S, 3, X, Y and Cybertruck --- MADE FOR • New Drivers — Set limits while they learn • Family Cars — Know how a shared car is being driven • Lending Your Car — Peace of mind when someone borrows your Tesla • Older Drivers — Keep an eye on a parent's driving, with their knowledge --- WHY SENTRY DRIVER? • Official Tesla Fleet API — No extra hardware to install • Works With Your Existing Tesla — No Premium Connectivity required --- PRIVACY • Secure Tesla Sign-In — You sign in with Tesla directly; we never see your Tesla password • Only You See the Data — Trips and alerts are visible only to the account holder • Delete Anytime — Delete your account and all its data from the app • Tell Your Drivers — Anyone you let drive a monitored car must be told it is monitored (see our Terms) --- Start your 7-day free trial today. Questions? support@sentrydriver.app Terms: https://sentrydriver.app/terms/ Privacy: https://sentrydriver.app/privacy/

Screenshots

Discount Plus4 screens
Sentry Driver4 screens

Verdict

The call

The clearest difference is in-app purchases: Discount Plus at none against Sentry Driver's 9. Discount Plus also leads on iOS requirement (12.0 vs 15.0). Sentry Driver's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 4 months). On price 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. Sentry Driver sells 9 in-app purchases, starting at $4.99 per month. Discount Plus asks for nothing beyond the download.

UpkeepUpdate frequency

Discount Plus ships an update every 4 months, Sentry Driver every 3 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
Discount Plus versus Sentry Driver: the parameters behind the verdict, then further details
ParameterDiscount PlusSentry Driver
PriceFreeFree
Rating—4.6 (9 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—9 — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPodiPhone, iPod
Requires iOS12.0 — better15.0
Further details — not scored
Size15 MB69 MB
Age rating4+4+
DeveloperHISANORI KAMEYAMASENTRY BRAIN SINGLE MEMBER P.C.

In-app purchases

None

Discount Plus

No in-app purchases

9 purchases

Sentry Driver

Subscriptions8
  • Premium 1 Vehicle Monthly$4.991 Month
  • Premium 2 Vehicles Monthly$9.991 Month
  • Premium 3 Vehicles Monthly$14.991 Month
Show 5 more
  • Premium 5 Vehicles Monthly$24.991 Month
  • Premium 1 Vehicle Yearly7 Days trial$44.991 Year
  • Premium 2 Vehicles Yearly$89.991 Year
  • Premium 3 Vehicles Yearly$139.991 Year
  • Premium 5 Vehicles Yearly$229.991 Year
One-time1
  • Lifetime unlock for 1 Vehicle Slot$99.99

Questions

Is Discount Plus free?
Discount Plus is free to download, with no in-app purchases.
Is Sentry Driver free?
Sentry Driver is free to download, with in-app purchases available.
Do Discount Plus or Sentry Driver have ads?
Discount Plus shows ads; Sentry Driver does not.
Which is updated more often, Discount Plus or Sentry Driver?
Discount Plus ships an update every 4 months, and Sentry Driver every 3 weeks. Most recently, Discount Plus was updated on October 25, 2026 and Sentry Driver on October 24, 2026.

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