HydroData vs Chronicle for Research
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HydroData
This app enables field data collection with map integration to pinpoint features and track your location. It supports gathering field reports, well water levels, and dam inspection data, syncing it all to the cloud when convenient.
- Field data collection
- Map-based feature selection
- Location tracking
- Cloud synchronization
- Well water level logging
- Dam inspection reports
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The application allows you to collect information within the field and then sync back to the cloud whenever you are ready. This includes a full map to select the feature while seeing your location on the map as well. It will also allow you to collect field reports, well water levels, and dam inspections.
Chronicle for Research
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Chronicle is a passive sensing application for behavioral research studies. Participants must first be enrolled in an approved research study and be possession of a unique enrollment link provided by the researcher in order to provide data. This application also queries, but does not collect step counts from HealthKit as a workaround to known SensorKit limitations.
Screenshots
Verdict
The clearest difference is iOS requirement: Chronicle for Research at 14.0 against HydroData's 17.6. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HydroData ships an update monthly, Chronicle for Research every 4 weeks. The most recent releases landed on August 5, 2026 and September 17, 2026 respectively.
| Parameter | HydroData | Chronicle for Research |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Monthly | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Longitude 103 | Methodic, Inc. |
In-app purchases
HydroData
No in-app purchases
Chronicle for Research
No in-app purchases
Questions
Is HydroData free?
Is Chronicle for Research free?
Do HydroData or Chronicle for Research have ads?
Which is updated more often, HydroData or Chronicle for Research?
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