Ashidori: Chart Indicators
Formula and chart, connected
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Tap a term in the formula and only that line darkens. Drag the time axis and the bars used for that value move with it. No quotes, no news — just the arithmetic.
Ashidori is a study app about WHY a technical indicator produces the number it produces.
It shows no quotes and no news. It gives no buy or sell judgements. Every price movement you see was authored by hand to explain that chapter.
■ Tap a term in the formula, and the line lights up
Press EMA12 in "MACD = EMA12 − EMA26" and only EMA12 darkens on the chart. The other lines fade rather than disappear, so you can still compare shapes. A name in the formula and a line in the figure always carry the same spelling.
■ The bars being used are drawn as a moving frame
Drag the time axis and a frame shows exactly which bars produced the value at that point. "A 25-day moving average uses 25 bars" becomes something you can count. For indicators that shift in time, such as Ichimoku, the figure shows which way and by how many bars.
■ Change the numbers and watch
Lengths and coefficients are on sliders. Compare RSI at 9, 14 and 25. Turn Bollinger's ±2σ into ±1σ. Move CCI's 0.015. You find out which numbers are derived and which were simply agreed upon. Move one and the formula, the readouts and the calculation frame all follow.
■ Methods that grew up in Japan, a chapter each
Ichimoku Kinko Hyo, the Sakata five methods, and Heikin-Ashi. Ichimoku gets a full screen for the part people get wrong most often: how the time shift works.
■ Where each indicator stops working
Every chapter has one. Where a moving average says nothing in a flat range; where DMI can no longer name a direction. This is not a collection of the cases that worked.
■ Contents
- 23 indicator chapters (basics / Japanese methods / oscillators / volume)
- 20 named candlestick shapes (one-, two- and three-bar)
- Worked examples: as many where the indicator fails as where it works
- Japanese, English, Simplified Chinese, Traditional Chinese (switchable in-app)
- Three-pane layout on iPad (contents / chart / formula and readings)
■ Price
Four chapters are free in full: Candlesticks, Moving Average, MACD and Volume. Everything else opens with a single one-time purchase. It is not a subscription: no expiry, no auto-renewal, and there is no free-trial period.
■ What it does not do
- No quotes, no order book, no news
- No connection to any broker or exchange; it cannot place orders
- No trading recommendations and no investment advice
- No account, and no network requests of its own (other than the purchase)
- No usage tracking
Contact: support@glspace.co.jp
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The developer, GYOU GI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
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Information
- Seller
- GYOU GI
- Size
- 2.2 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock every chapter $19.99
- Copyright
- © 2026 GLSPACE 株式会社