Comparison

Haru vs Elevation Map

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

Head to head
About

Haru

Features
Read full description

Haru is a practical tool that every astronomy enthusiast should have. 7Timers! mainly provides weather forecasts designed for astronomical use. The forecast covers up to 3 days and includes parameters that astronomers care about, such as seeing and transparency. In addition to the 7Timers! feature, the app also provides a variety of useful information. Current main features include: - 7Timers! - East Asia satellite cloud imagery - United States satellite cloud imagery - Real-time solar images - “Sun Position” Notification Center widget (fully redesigned) - “Moon Phase” Notification Center widget (fully redesigned) - Create and share GIF animations from satellite images and solar images (You can also convert the GIF animations into videos for sharing.) Note: Creating GIF animations requires downloading a relatively large number of files. If you are using cellular data or a metered connection, please pay attention to data usage when viewing GIF animations. Haru for macOS has been discontinued. Haru will be updated to a Universal App in the future. Please stay tuned. More useful features for astronomy enthusiasts will be added in future updates. Stay tuned! Acknowledgements: * Thanks to Shanghai Astronomical Observatory for information service support (http://www.astron.ac.cn). * Thanks to CWB and NOAA for providing satellite cloud imagery (http://www.cwb.gov.tw, https://www.noaa.gov). * Thanks to SOHO for providing solar images (https://sohowww.nascom.nasa.gov). About altitude correction for 7Timers! data: The app automatically applies altitude correction based on the elevation of your location. If you need to override the default correction, please add a new location and manually enter the altitude. For 2 km correction, set the altitude to 2000 m. For 7 km correction, set the altitude to 7000 m. Note: Starting from this update, Haru no longer supports iOS versions earlier than iOS 17. If you would like to continue receiving updates, please upgrade your device to the latest version of iOS.

About

Elevation Map

This app calculates air pressure, temperature, and oxygen levels based on altitude, and provides mountain weather forecasts. It simulates the oxygen-hemoglobin dissociation curve to help users understand blood oxygen saturation at different heights. Access global elevation data and visualize it with a color map.

Highlights
  • Altitude-based air pressure and temperature calculation
  • Oxygen content and partial pressure prediction
  • Blood oxygen saturation simulation
  • Global elevation data query
  • Mountain weather forecasts
  • Elevation color map visualization
Features
Read full description

As the altitude increases, the air becomes thinner, the temperature decreases, the air pressure decreases, the boiling point of water decreases, the oxygen content in the air decreases, and the oxygen partial pressure decreases. When we climb higher mountains or go to high altitude areas, this knowledge is what we need to know. Elevation Map-Mountain Weather app uses the relationship between altitude and air pressure, air temperature, and oxygen, and uses altitude to calculate air pressure, air temperature, and oxygen or calculate altitude by air pressure. At last, the app provide mountain weather forecast for 7178 mountains in the world. According to the oxygen-hemoglobin dissociation curve, healthy people can maintain normal blood oxygen saturation at an altitude of 3000 meters or even 4000 meters and 5000 meters. However, when the pH drops, the body temperature rises or other reasons will reduce the oxygen affinity, the blood oxygen saturation will drop to an abnormal range at this altitude, causing hypoxia. The app simulates the dissociation curve to help users analyze the influence of body temperature and PH on blood oxygen saturation, and predict blood oxygen saturation at different altitudes. The Elevation Map-Mountain Weather app provides global elevation data, which can be queried on the map or by input longitude and latitude value. Under the query results, you can set the sea level temperature and air pressure to calculate the air pressure, air temperature, boiling point, oxygen content, oxygen partial pressure, and blood oxygen saturation at the elevation. An elevation color map is also provided to visualize global elevation distribution. The Elevation Map-Mountain Weather app is divided into the following five parts: 1. Current: Combining GPS, device barometer, and real-time weather at the current location, get the current location's altitude, air pressure, water boiling point, oxygen content and blood oxygen. 2. Map: Move the map to get the elevation of any location, and calculate the air pressure, air temperature, boiling point, oxygen content, blood oxygen of the location given the sea level air pressure temperature combined with the altitude 3. Tools: The tool part mainly has 6 functions: 1. Elevation search 2. Altitude list 3. Altitude calculate 4. Oxygen-hemoglobin dissociation curve 5. Blood oxygen log 6. Elevation Color Map 4. Mountain Favorite mountain and mountain weather forecast at different elevation。 Disclaimer:(Mountain weather forecast) This application is not dedicated to predicting various sudden weather disasters in mountainous areas. It mainly informs about meteorological factors that always exist and change with altitude, such as temperature, air pressure, humidity, oxygen content, etc. IN NO EVENT SHALL THE APP BE LIABLE FOR ANY CONSEQUENTIAL, SPECIAL, LOST PROFITS, INDIRECT OR OTHER DAMAGES. When conducting such activities, please choose a more accurate, more specific, and more comprehensive forecast plan 5. Settings 【Pro】 1.Mountain weather forecast 2.unlock all tools Purchase rules: [Month Pro] Purchase a monthly member for $ 2.99 / month and renew it automatically every month. [Annual Pro] 19.99 $ / year to purchase annual annual membership and automatically renew it annually. Purchase Notes: 1. The account will be automatically renewed and deducted the corresponding fee 1 day before the expiration. 2. If you need to cancel the renewal, please cancel in your personal iTunes account at least 1 day in advance. 3. After purchase, users can manage or turn off automatic renewal in personal account settings. Terms of Services : https://www.astronomyobserver.net/h5/elevation/user/en Privacy policy: https://www.astronomyobserver.net/h5/elevation/privacy/en

Screenshots

Haru4 screens
Elevation Map4 screens

Verdict

The call

The clearest difference is price: Elevation Map at Free against Haru's $0.49. Haru's advantage is in-app purchases (none vs 3). On update cadence, 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

Elevation Map is free to download; Haru costs $0.49 up front. Elevation Map sells 3 in-app purchases, starting at $2.99 per month. Haru asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
Haru versus Elevation Map: the parameters behind the verdict, then further details
ParameterHaruElevation Map
Price$0.49Free — better
Rating—4.7 (23 ratings) — better
Positive reviews—66.7% of reviews
Number of ratings—23 — better
Update frequencyEvery 6 weeksEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size15 MB50 MB
Age rating4+4+
Developer文杰 朱雪平 王

In-app purchases

None

Haru

No in-app purchases

3 purchases

Elevation Map

Subscriptions2
  • Month Pro$2.991 Month
  • Annual Pro$19.991 Year
One-time1
  • Lifetime Pro$49.99

Questions

Is Haru free?
Haru costs $0.49, with no in-app purchases.
Is Elevation Map free?
Elevation Map is free to download, with in-app purchases available.
Do Haru or Elevation Map have ads?
Neither Haru nor Elevation Map shows ads.
Which is updated more often, Haru or Elevation Map?
Haru ships an update every 6 weeks, and Elevation Map every 6 weeks. Most recently, Haru was updated on October 8, 2026 and Elevation Map on October 18, 2026.

Other comparisons