Comparison

F2Pool vs Bubble Level

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

Head to head
About

F2Pool

Manage your cryptocurrency mining operations from anywhere. Monitor your machines, track revenue, and switch between mining profitable coins with ease. Receive custom alerts for your mining activities.

Highlights
  • Manage multiple mining accounts and currencies
  • Monitor worker status and hashrate
  • Set custom mining alerts
  • Compare mining hardware and view high-yield machines
  • Switch between mining profitable coins
Features
Read full description

f2pool is the world’s leading mining pool, serving miners in more than 100 countries. Providing the most stable mining service with a low latency rate is our goal. Mining for Bitcoin, Ethereum, Litecoin, Dogecoin, and about 40 other cryptos, allows our customers to choose the most profitable coin to mine at any given time. The f2pool app offers a simple way for everyone to manage their mining operation. Conveniently manage your mining machines, view your revenue, and even utilize our one-click button to switch between logged-in and anonymous mining. Miners can access every function of the website through the app, including the ability to set up custom alerts for any worker or group. Features 1. View multiple accounts and multiple currencies 2. Multi-level account, worker management, hashrate and status views 3. Worker status alerts with custom alert settings for alarm frequency and sound 4. Read-only pages for guest users 5. Proof-of-work currency rankings to discover new currencies 6. Mining hardware comparison, real-time view of high-yield mining machines

About

Bubble Level

Transform your device into a precise spirit level and inclinometer. Features innovative face-down measurement, dual bullseye and tubular levels, and audio/haptic feedback for accurate alignment in various projects.

Highlights
  • Face-down precision mode
  • Dual bullseye and tubular levels
  • Audio and haptic zero feedback
  • Relative zero and calibration
  • Angle lock/hold
  • Digital angle readout
Features
Read full description

Turn your phone into a professional, high-precision spirit level and inclinometer! Whether you are hanging picture frames, aligning a TV wall mount, leveling a tripod, or tackling carpentry and DIY projects, Bubble Level: Spirit & Angle delivers workshop-grade precision with a sleek, modern interface. --- WHY CHOOSE THIS BUBBLE LEVEL? --- • INNOVATIVE FACE-DOWN PRECISION MODE Tired of inaccurate measurements caused by bulky rear camera bumps? Simply place your phone face-down on its 100% flat front glass, tap the 3-second or 5-second countdown timer, and let the app measure. An intuitive phone-back diagram highlights the corner or side to raise. • DUAL BULLSEYE & TUBULAR LEVELS - 360° Bullseye Level: Measures 2D surface inclination in all directions simultaneously with realistic fluid damping physics. - Tubular Spirit Vial: Classic horizontal level for single-axis edge leveling, shelf alignment, and corner checks. • AUDIO & HAPTIC ZERO FEEDBACK Hear a crisp audio tone and feel a subtle vibration tick the exact millisecond you reach perfect 0.0° level. No need to squint at the screen when working in tight, dark, or awkward spaces. • RELATIVE ZERO & CALIBRATION Calibrate against any angled reference surface to measure relative slopes, bevels, and pitch angles with a single tap. • ANGLE LOCK / HOLD Freeze your live measurement on screen so you can easily inspect readings after pulling the phone away from awkward corners. --- COMMON USE CASES --- • Home & Decor: Picture frames, mirrors, wall-mounted TVs, shelves, and wall art. • Carpentry & DIY: Tables, furniture assembly, tiling, and cutting guides. • Photography & Video: Leveling tripods, camera rigs, and gimbals. • Camping & RV: Leveling RVs, travel trailers, camping tables, and portable stoves. --- KEY FEATURES --- • High-precision accelerometer & gyroscope calculation engine • Crisp digital angle readout down to 0.1° accuracy • Sound & haptic vibration feedback at 0.0° balance • Face-Down measurement with countdown timer (bypasses camera bumps) • Relative zero angle calibration • Clean, eye-friendly dark titanium design • Sensor measurements are processed on your device. See our privacy policy for advertising data use. • Optional one-time In-App Purchase to remove all ads permanently Download Bubble Level: Spirit & Angle today for fast, reliable, and hassle-free leveling!

Screenshots

F2Pool4 screens
Bubble Level4 screens

Verdict

The call

The clearest difference is rating: Bubble Level at 5.0 against F2Pool's 4.0. Bubble Level also leads on update cadence (weekly vs every 3 weeks). F2Pool's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, device support and iOS requirement 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. Bubble Level sells 1 one-off in-app purchase. F2Pool asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Bubble Level holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: F2Pool has 183 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

F2Pool ships an update every 3 weeks, Bubble Level weekly. Both last shipped on October 24, 2026.

Scorecard6 real differences · 4 level
F2Pool versus Bubble Level: the parameters behind the verdict, then further details
ParameterF2PoolBubble Level
PriceFreeFree
Rating4.0 (183 ratings)5.0 (2 ratings) — better
Positive reviews41.4% of reviews—
Number of ratings183 — better2
Update frequencyEvery 3 weeksWeekly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size59 MB8 MB
Age rating4+4+
DeveloperF2Pool Information Technology Co., Ltd.Tianyu Lu

Customer experience

F2Pool

All ratings183 ratings
Positive73.2%
Neutral4.9%
Negative21.9%
Written reviews70 reviews
Positive41.4%
Neutral7.1%
Negative51.4%

Bubble Level

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

F2Pool

Reported bugs

19 issues
  • Cannot login after last update due to QR code scanning issue
  • Yesterday's revenue is shown as zero very often
  • Autocorrect enabled on code verification and username textboxes
  • App closes when trying to view BTC mining details
  • App crashes when entering BTC page
Show 14 more
  • Widgets are missing after update
  • App keeps trying to track user activity despite denials
  • Miners shown as offline when they are online
  • ASIC miner disappears from dashboard
  • Balance and daily earnings not displayed correctly in the 'Me' tab
  • Widgets not working on iPhone 13
  • App crashes on iPhone 7 after the last update
  • App crashes on iPhone 8 Plus
  • App crashes on iOS 9
  • App tracking pop-up appears every time the app is opened
  • Cannot register due to username format issues
  • Calculator has problems
  • Alarms only work in the app, not for offline miners
  • Cannot see offline equipment notifications

Requested features

12 requests
  • Add Russian language support
  • Add watchOS app with notifications and hashrate data
  • Add ELA-NMC support on iOS/Android
  • Add payout threshold of 0.001 BTC for Bitcoin mining
  • Add offline equipment notifications
Show 7 more
  • Add support for Grin coin
  • Add support for ETN and other altcoins
  • Improve iPad app scaling
  • Do not require constant authenticator code entry
  • Allow switching between wallets without exiting login
  • Add manual payment option
  • Add QR code scanner for login on iPhone 15 Pro

Bubble Level

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

F2Pool

No in-app purchases

1 purchases

Bubble Level

One-time1
  • Remove Ads$1.99

Questions

Is F2Pool free?
F2Pool is free to download, with no in-app purchases.
Is Bubble Level free?
Bubble Level is free to download, with in-app purchases available.
Which has better reviews, F2Pool or Bubble Level?
Bubble Level is rated higher. F2Pool averages 4.0 out of 5 from 183 ratings, while Bubble Level averages 5.0 from 2 ratings.
Do F2Pool or Bubble Level have ads?
Bubble Level shows ads; F2Pool does not.
Which is updated more often, F2Pool or Bubble Level?
F2Pool ships an update every 3 weeks, and Bubble Level weekly. Most recently, F2Pool was updated on October 24, 2026 and Bubble Level on October 24, 2026.

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