Comparison

PV Doc vs HydroTimer

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

Head to head
About

PV Doc

Features
Read full description

PV Doc – Smart Site Recording Tool PV Doc is designed for construction site inspections, combining photo & audio capture, speech-to-text, AI classification, multilingual translation, and PDF/PVDOC export. It supports multi-project management with local data storage, making site recording faster and collaboration easier. Key Features • Quick Photo Capture: Save details with auto EXIF data • Voice Recording & Transcription: Convert speech into text instantly • Multilingual Translation: 30+ languages supported • Professional PDF Export: Portrait/Landscape, customizable info • Project Management: Manage multiple projects and inspections Highlights • Bilingual Display: Native + foreign language • Location Tagging: Auto-save GPS info • Local Storage: Keep data secure • Easy Sharing: Generate and share reports with one tap

About

HydroTimer

Features
Read full description

Water Clock is a smart drinking water health manager app. It helps users establish scientific drinking habits, records daily water intake through an intuitive interface, provides personalized drinking reminders, and generates detailed health data statistics. The app adopts a simple iOS design style, supports users to set personal drinking goals, view historical drinking records and health trend analysis. Through the smart reminder function, it ensures that users replenish water on time and develop good drinking habits, thereby improving their overall health level. The app also provides health advice and drinking knowledge to help users understand the importance of scientific drinking, making health management simple and interesting.

Screenshots

PV Doc4 screens
HydroTimer3 screens

Verdict

The call

The clearest difference is in-app purchases: HydroTimer at none against PV Doc's 4. PV Doc's advantage is update cadence (every 5 days vs every 10 months). On price, ads, 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. PV Doc sells 4 one-off in-app purchases. HydroTimer asks for nothing beyond the download.

UpkeepUpdate frequency

PV Doc ships an update every 5 days, HydroTimer every 10 months. The most recent releases landed on October 28, 2026 and October 22, 2026 respectively.

Scorecard2 real differences · 4 level
PV Doc versus HydroTimer: the parameters behind the verdict, then further details
ParameterPV DocHydroTimer
PriceFreeFree
Update frequencyEvery 5 days — betterEvery 10 months
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size13 MB2 MB
Age rating17+4+
Developer铭 陈Aurelis Limited

In-app purchases

4 purchases

PV Doc

One-time4
  • 10个泡泡$0.99
  • 70个泡泡$6.99
  • 150个泡泡$14.99
Show 1 more
  • 1000个泡泡$69.99
None

HydroTimer

No in-app purchases

Questions

Is PV Doc free?
PV Doc is free to download, with in-app purchases available.
Is HydroTimer free?
HydroTimer is free to download, with no in-app purchases.
Do PV Doc or HydroTimer have ads?
Neither PV Doc nor HydroTimer shows ads.
Which is updated more often, PV Doc or HydroTimer?
PV Doc ships an update every 5 days, and HydroTimer every 10 months. Most recently, PV Doc was updated on October 28, 2026 and HydroTimer on October 22, 2026.

Other comparisons