Comparison

WatchWatcher vs Bubble Level & Inclinometer

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

Head to head
About

WatchWatcher

Read full description

Enhanced App Store Description The most complete, precise, and effortless way to track your watch’s accuracy over time. Whether you’re a casual owner or a serious collector, WatchWatcher helps you understand exactly how your timepieces are performing—day after day, week after week. Powerful timing tools • Add timing events in two ways: a simple manual tap or automatic extraction from an image. • Reset your watch to an accurate reference time and continue tracking seamlessly—the app can recalculate all past events with a single instruction. • View a beautiful, full-size graph in your browser showing all your watches at once. Insightful accuracy data • Switch between absolute difference and rate drift to see your watch’s behaviour from every angle. • Discover how your watch compares to others—both across all users and within its specific brand. • See average drift across all time, or focus only on the most recent two events. Smart predictions that save time • When you log a new event, WatchWatcher predicts where your watch should be based on historical drift—minimising adjustments and speeding up logging. • Fine-tune prediction behaviour in settings for even more accuracy. Import, export, and stay in control • Easily back up or migrate your data with iCloud import/export or CSV. • All online features work without creating an account. • No subscriptions, no in-app purchases—just powerful watch-tracking tools, free and private.

About

Bubble Level & Inclinometer

Features
Read full description

Bubble Level & Inclinometer turns your phone into a fast, trustworthy level and angle finder — for DIY, trades, and everyday fixes. Get a true reading in under a second: • 2D bullseye level for flat surfaces • Horizontal & vertical spirit level • Full inclinometer / angle finder in degrees, percent grade, mm/m and roof pitch (x:12) Built to be trusted: • Guided 180° calibration wizard — calibrate once, trust every reading • Tolerance mode with OK / NEAR / OUT haptic and sound guidance, so you can work without staring at the screen • Confidence bar shows how stable the reading is • Hold / Freeze, relative zero (Set 0), measurement history with CSV export, and a shareable measurement card Perfect for: • Hanging pictures, shelves and frames perfectly straight • Checking roof pitch and slopes • Leveling an RV, trailer, appliance or furniture • Tiling, decking, ramps and stairs • Woodworking angles, miter and crown molding No ads. No limits. No subscriptions. No data collected. Works 100% offline. Most level apps bury the measurement under ads and paywalls. This one doesn't. It stays out of your way, respects your privacy, and just measures — accurately, every time.

Screenshots

WatchWatcher4 screens
Bubble Level & Inclinometer4 screens

Verdict

The call

The clearest difference is price: Bubble Level & Inclinometer at Free against WatchWatcher's $1.99. Bubble Level & Inclinometer also leads on update cadence (every 4 months vs every 9 months) and iOS requirement (14.0 vs 18.2). On 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

Bubble Level & Inclinometer is free to download; WatchWatcher costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

WatchWatcher ships an update every 9 months, Bubble Level & Inclinometer every 4 months. The most recent releases landed on October 9, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 3 level
WatchWatcher versus Bubble Level & Inclinometer: the parameters behind the verdict, then further details
ParameterWatchWatcherBubble Level & Inclinometer
Price$1.99Free — better
Update frequencyEvery 9 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.214.0 — better
Further details — not scored
Size14 MB22 MB
Age rating4+4+
Developersilas slacklapnito.cz s.r.o.

In-app purchases

None

WatchWatcher

No in-app purchases

None

Bubble Level & Inclinometer

No in-app purchases

Questions

Is WatchWatcher free?
WatchWatcher costs $1.99, with no in-app purchases.
Is Bubble Level & Inclinometer free?
Bubble Level & Inclinometer is free to download, with no in-app purchases.
Do WatchWatcher or Bubble Level & Inclinometer have ads?
Neither WatchWatcher nor Bubble Level & Inclinometer shows ads.
Which is updated more often, WatchWatcher or Bubble Level & Inclinometer?
WatchWatcher ships an update every 9 months, and Bubble Level & Inclinometer every 4 months. Most recently, WatchWatcher was updated on October 9, 2026 and Bubble Level & Inclinometer on October 6, 2026.

Other comparisons