Comparison

Proving Ground vs LastTimer

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

Head to head
About

Proving Ground

Book and manage your training classes at a functional fitness studio. View schedules, reserve spots in group sessions, and purchase class packages directly from your device. Focus on smart training with mobility and recovery integrated into every workout.

Highlights
  • View class schedules
  • Book group classes
  • Purchase class packages
  • Functional training
  • Mobility and recovery focus
Features
Read full description

The official app of Proving Ground Studio in Hull, MA. Download the app to find and book training classes. From the app you can view class schedules, book group classes, purchase class packages. Proving Ground is a revolutionary training studio offering top-quality functional training classes and personal training sessions. We focus on training smart, with mobility and recovery as key ingredients of each workout. “Sometimes we are tested. Not to show our weaknesses, but to discover our strengths.” This is Proving Ground.

About

LastTimer

This interval timer app helps you maximize workout efficiency by guiding your training sessions. Create custom timers with prep time, exercise intervals, rest periods, and audio cues. Track progress visually with widgets and live activities.

Highlights
  • Customizable interval timers
  • Prep time and rest periods
  • Multiple exercises per cycle
  • Up to 10 cycles per workout
  • Audio cues
  • Home screen widgets
  • Live Activities integration
Features
Read full description

A timer keeps you honest. No more rushing through sets or resting too long between rounds. You set the work, the rest, and the pace, and LastTimer holds the line so you can focus on training, not on watching the time. Built for rounds, tuned for everything. LastTimer runs jiu jitsu, boxing, MMA, Muay Thai, and wrestling rounds with a clean bell that cuts through a noisy room, and it is just as at home with HIIT, Tabata, circuits, yoga, meditation, or a Pomodoro block. NEW IN 1.4.0 - ON YOUR WRIST, IN SYNC, ONE SCAN AWAY - Apple Watch app: a real timer on your wrist that runs on its own, with no iPhone nearby. Start a round, drop your wrist, and it keeps running and taps you at every change. - Your timers, everywhere: iCloud keeps saved timers and workout history in sync across iPhone, iPad, and Apple Watch. Build a timer on the phone and it is already on your wrist. - Scan to run: hand someone a workout with a scan. It opens the timer instantly, with nothing to install. - Every built-in preset is on the Watch too, ready without saving a thing. ONE TIMER, EVERY SCREEN - A full native iPad app with a coaching dashboard: the whole session at once, a big ring beside a board of every round, session stats, and what is up next. - Presentation Mode: a full-screen room display for a TV or projector over AirPlay or a USB-C to HDMI cable, so the whole class reads the timer from across the mat. - Lock Screen and Dynamic Island controls: pause, resume, and skip a round without unlocking. - Interactive Home Screen widget: start a saved timer with one tap; pause, resume, or skip the running one. - Voice announcements: spoken round call-outs, a 3-2-1 countdown, and "Workout complete." - Named, colored rounds: label each slot (Warm-up, Guard Passing, Sparring) and the ring tints to match, everywhere the round shows. - Round presets: boxing, MMA, Muay Thai, wrestling, per-belt IBJJF match times, Tabata, and EMOM, ready in one tap. - Session history and streaks: every finished workout logged with a daily streak. - Share a timer: send any timer (rounds, names, colors) as a link a training partner imports. - Siri and Shortcuts: "Hey Siri, start Boxing Rounds in LastTimer." BUILD YOUR PERFECT TIMER - Prep, exercise, and rest periods - Multiple exercises per cycle, up to 10 cycles - A bell that mixes over your music and plays even on silent - Accurate in the background when you switch apps WORKS FOR - Jiu Jitsu, boxing, MMA, Muay Thai, wrestling - HIIT and Tabata - Circuit and strength training - Yoga and stretching - Meditation - Pomodoro study sessions - Cooking (yes, really) PRIVACY No account. No ads. The developer collects no data. Your timers and history live on your device and sync privately through your own iCloud, where only you can see them. LastTimer costs less than that 12 oz can of sugar water. Download it and take control of your training.

Screenshots

Proving Ground4 screens
LastTimer4 screens

Verdict

The call

The clearest difference is price: Proving Ground at Free against LastTimer's $0.99. Proving Ground also leads on ratings volume (199 vs 11). LastTimer's advantage is device support (3 vs 1). On rating, review sentiment, update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Proving Ground is free to download; LastTimer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Proving Ground against 5.0 for LastTimer. That said, the two scores are not equally well evidenced: Proving Ground has 199 ratings behind it against 11, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Proving Ground ships an update monthly, LastTimer every 3 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

Scorecard4 real differences · 6 level
Proving Ground versus LastTimer: the parameters behind the verdict, then further details
ParameterProving GroundLastTimer
PriceFree — better$0.99
Rating5.0 (199 ratings)5.0 (11 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings199 — better11
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree with in-app purchases — betterPaid
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS16.016.0
Further details — not scored
Size38 MB4 MB
Age rating4+4+
DeveloperProving Ground Limited Liability CorporationMatthew weppler

Customer experience

Proving Ground

All ratings199 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

LastTimer

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Proving Ground

No in-app purchases

None

LastTimer

No in-app purchases

Questions

Is Proving Ground free?
Proving Ground is free to download, with no in-app purchases.
Is LastTimer free?
LastTimer costs $0.99, with no in-app purchases.
Which has better reviews, Proving Ground or LastTimer?
Proving Ground and LastTimer are both rated 5.0 out of 5 on the App Store, from 199 and 11 ratings respectively.
Do Proving Ground or LastTimer have ads?
Neither Proving Ground nor LastTimer shows ads.
Which is updated more often, Proving Ground or LastTimer?
Proving Ground ships an update monthly, and LastTimer every 3 weeks. Most recently, Proving Ground was updated on September 22, 2026 and LastTimer on September 23, 2026.

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