Comparison

SUNSATHI SOLAR vs TrueLevel

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

Head to head
About

SUNSATHI SOLAR

Features
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This app is used to remotely view the operation data of photovoltaic and energy storage equipment. Users can easily know the operation information of photovoltaic and energy storage equipment, and maintenance personnel can also conveniently carry out after-sales maintenance.

About

TrueLevel

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TrueLevel turns your iPhone into a bubble level, angle finder, protractor, and plumb tool for carpentry, installation, and DIY checks β€” all with a clean, easy-to-read interface. β€’ BUBBLE LEVEL Place your iPhone on a surface to check whether it is level. The dual-axis bubble responds in real time with live degree readouts. β€’ ANGLE FINDER & PROTRACTOR Use the full 360Β° protractor display to check an angle. Hold your device against a surface and read the displayed angle for cutting, framing, or slope checks. Lock & Hold keeps a reading visible while you move the phone. β€’ PLUMB MODE Check vertical alignment with a dedicated plumb bob display. Ideal for door frames, posts, fences, and wall installations. β€’ HAPTIC CONFIRMATION Feel a subtle tap when the readout reaches level, so you do not have to stare at the screen. β€’ SAVE & REVIEW READINGS (Pro) Save a reading with a job label, edit it, and revisit your organized measurement history later. Saved records stay on your phone. β€’ DEVICE CALIBRATION Zero TrueLevel against a reference surface with a simple two-step calibration. Results depend on device sensors, placement, case, and calibration. FREE MEASUREMENT TOOLS β€’ Bubble level with real-time dual-axis display β€’ Angle finder with full protractor readout β€’ Plumb mode β€’ Lock & Hold β€’ Haptic confirmation β€’ Device calibration and unit controls TRUELEVEL PRO β€” CHOOSE YOUR ACCESS β€’ Weekly subscription: eligible new weekly subscribers can try Pro free for 3 days, then the subscription renews weekly at the localized App Store price until canceled β€’ Yearly subscription: billed yearly at the localized App Store price, with no free trial β€’ Lifetime access: a one-time purchase at the localized App Store price, with no trial or renewal Every Pro option unlocks the same saved-work workflow: labeled measurement history, editing, organization, and later reference. Existing lifetime purchasers keep their Pro access. BUILT FOR PROFESSIONALS & DIY TrueLevel is designed for carpenters, contractors, engineers, and anyone who wants a practical clinometer on their phone. No ads, no account, and no internet required for measurements. PRIVACY FIRST TrueLevel collects zero data. No analytics, no tracking, no account required. Your measurements stay on your device. Requires iOS 17.6 or later. Privacy Policy: https://ai-app-generator-sigma.vercel.app/truelevel/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

SUNSATHI SOLAR4 screens
TrueLevel4 screens

Verdict

The call

The clearest difference is in-app purchases: SUNSATHI SOLAR at none against TrueLevel's 1. SUNSATHI SOLAR also leads on iOS requirement (15.6 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. TrueLevel sells 1 one-off in-app purchase. SUNSATHI SOLAR asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 14, 2026 and September 27, 2026 respectively.

Scorecard2 real differences Β· 4 level
SUNSATHI SOLAR versus TrueLevel: the parameters behind the verdict, then further details
ParameterSUNSATHI SOLARTrueLevel
PriceFreeFree
Update frequencyMonthlyMonthly
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPod β€” betteriPhone
Requires iOS15.6 β€” better17.6
Further details β€” not scored
Size37 MB3 MB
Age rating4+4+
Developerζ— ι”‘δΉδΌη½‘η»œη§‘ζŠ€ζœ‰ι™ε…¬εΈDaniil Mukashev

In-app purchases

None

SUNSATHI SOLAR

No in-app purchases

1 purchases

TrueLevel

One-time1
  • TrueLevel Pro$3.99

Questions

Is SUNSATHI SOLAR free?
SUNSATHI SOLAR is free to download, with no in-app purchases.
Is TrueLevel free?
TrueLevel is free to download, with in-app purchases available.
Do SUNSATHI SOLAR or TrueLevel have ads?
Neither SUNSATHI SOLAR nor TrueLevel shows ads.
Which is updated more often, SUNSATHI SOLAR or TrueLevel?
SUNSATHI SOLAR ships an update monthly, and TrueLevel monthly. Most recently, SUNSATHI SOLAR was updated on October 14, 2026 and TrueLevel on September 27, 2026.

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