Comparison

Slate Weightlifting vs RackMath

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

Head to head
About

Slate Weightlifting

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Slate is a clean, focused workout tracker built for lifters who want to log sets and track progress without the clutter. - Log sets quickly with weight, reps, and exercise selection - Track personal records automatically - View your workout history on a calendar heatmap - Organize exercises with custom tags - See weekly workout streaks and goals - Rest timer between sets - Dark theme designed for the gym No account required. No ads. Your data stays on your device.

About

RackMath

This app removes the guesswork from loading a barbell, providing color-coded diagrams for precise plate loading. It offers alternative weight options when exact matches aren't possible and allows for real-time bar monitoring as plates are added or removed.

Highlights
  • Color-coded plate diagrams
  • Nearest weight alternatives
  • Customizable plate inventory
  • Real-time bar weight monitoring
  • Multiple barbell setup organization
  • Efficient weight transitions
Features
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Stop doing plate math between sets. Type the weight you want on the bar and Rack Math shows exactly which plates to load per side, based on your plates, your bar, and your gym. Build a list of weights, and it tells you precisely what to ADD and REMOVE to get from each set to the next, so you spend your rest resting. FREE, FOREVER • Instant plate math for any weight, in lb or kg • Your plate inventory: only weights you can actually make • Bar diagrams that match what’s on the bar • Build-on-bar: enter what’s loaded right now and work from there RACK MATH COACH Turn the calculator into a training partner. Try the Coach free for your first 10 workouts. No account. Nothing to cancel. Keep it with a subscription or a one-time Lifetime purchase. • A daily plan built around your lifts: Rack Math schedules what to train next and adapts as you recover • Freshest: an extra generated session for off days. Lifts picked from whatever your recovery says is most rested, with the day’s plan built around them • Cardio-aware recovery: with Apple Health, your runs, rides, and swims count toward what’s fresh, tracked as one total across activities, so swapping a walk for a run never reads as slacking • Unlimited weights in your stack • Warmup ramps in one tap: straight sets, top set + backoff, or 5/3/1 • Follow mode: the current set lights up, DONE advances, the next plate change is always right in front of you • Lock Screen Live Activity: your rest countdown, next set, and exact plate change. Log your set, skip rest, or load the next exercise without unlocking your phone • Apple Watch: follow along from your wrist with displays for weight, per-side plates, a rest timer that taps you when it’s up, and one-tap DONE, synced from your iPhone • Automatic progression: Rack Math suggests your next weights and reps • Strength tracking: your estimated 1-rep max over time, and personal records • Gyms: save plate setups for home, work, or travel and switch in two taps • Workout timer with per-exercise split times • Apple Health: finished workouts logged as strength training (optional) • Workout history: what you lifted, how long it took, your top weight, and the ability to reload any past stack onto the bar • Fewer-swaps optimizer: re-arranges the whole workout’s plate layouts to minimize how many plates you touch • Save and reload your stacks Choose your plan: Monthly, Annual (best value), or pay once for Lifetime. The plate calculator stays free either way. No ads. PRIVATE BY DESIGN Rack Math has no accounts and no ads. Your training lives on your device and, if you use iCloud, syncs privately through your own iCloud account; we never see it. We use one privacy-first analytics tool that collects no personal data and can’t identify you. Writing to Apple Health is entirely opt-in. See our privacy policy: https://keithjeffery.org/rack-math-privacy

Screenshots

Slate Weightlifting4 screens
RackMath4 screens

Verdict

The call

The clearest difference is update cadence: RackMath at weekly against Slate Weightlifting's every 3 months. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Slate Weightlifting ships an update every 3 months, RackMath weekly. The most recent releases landed on September 26, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 9 level
Slate Weightlifting versus RackMath: the parameters behind the verdict, then further details
ParameterSlate WeightliftingRackMath
PriceFreeFree
Rating—3.0 (4 ratings) — better
Positive reviews—33.3% of reviews
Number of ratings—4 — better
Update frequencyEvery 3 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, Apple Watch — better
Requires iOS18.618.0 — better
Further details — not scored
Size4 MB7 MB
Age rating4+4+
DeveloperTash Holdings LLCKeith Jeffery

In-app purchases

None

Slate Weightlifting

No in-app purchases

None

RackMath

No in-app purchases

Questions

Is Slate Weightlifting free?
Slate Weightlifting is free to download, with no in-app purchases.
Is RackMath free?
RackMath is free to download, with no in-app purchases.
Do Slate Weightlifting or RackMath have ads?
Neither Slate Weightlifting nor RackMath shows ads.
Which is updated more often, Slate Weightlifting or RackMath?
Slate Weightlifting ships an update every 3 months, and RackMath weekly. Most recently, Slate Weightlifting was updated on September 26, 2026 and RackMath on October 1, 2026.

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