Optogenetics Pro vs Diary Fast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Optogenetics Pro
This tool helps researchers calculate the necessary optical power for optogenetics experiments involving light delivery to deep brain areas. It considers brain region scattering properties, opsin type, and optical fiber characteristics to estimate excitation depth as a function of optical power.
- Calculate required optical power
- Estimate opsin excitation depth
- Model light scattering in brain tissue
- Input brain region properties
- Input opsin properties
- Input optical fiber properties
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Optogenetics Pro is a tool which aids an investigator in calculating the required optical power for a given in-vivo experiment involving optogenetics or any other experimental approach that includes light delivery to deep brain areas via optical fibers. Different brain areas have different optical properties, which determine how light scatters and distributes, once it exits the optical fiber. To estimate the amount of light required for a given experimental design, knowledge about the specific scattering properties of the brain region of choice, the specific opsin to be used, and the properties of the optical fiber are required. Once a user inputs these parameters into the APP, it calculates the maximal depth at which excitation of the opsin can be expected. The penetration depth is plotted as a function of optical power (mW), such that a user can see how light scatters in the brain tissue under the specific circumstances. For the scientific basis of this calculator, please see Al-Juboori, Dondzillo, Stubblefield, Felsen, Lei, and Klug: Light scattering properties vary across different regions of the adult mouse brain, PlosONE, e67626(8) 2013. For additional information, please see www.optogeneticsapp.com. The pro and regular versions of the app are identical.
Diary Fast
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Diary Fast – Private Daily Journal Record your thoughts, memories, and everyday moments quickly and easily. Diary Fast is a simple and private journal app designed for capturing life's important moments anytime, anywhere. Whether you want to write about your daily experiences, save personal reflections, track your goals, or keep meaningful memories, Diary Fast helps you create your own personal space. Fast & Simple Writing Start writing whenever inspiration comes. Create journal entries in just a few taps with a clean and intuitive experience designed for everyday use. Your Private Journal Your diary entries are stored locally within the app, giving you control over your personal records. No account is required, and your memories stay within your device. Keep Your Memories Organized Easily browse your previous entries and revisit special moments from your past. Keep your thoughts, ideas, and experiences organized in one place. Write Anywhere, Anytime Diary Fast works offline, allowing you to record your thoughts whenever you need, even without an internet connection. Designed for Everyday Life Use Diary Fast for: Daily journaling Personal reflections Travel memories Gratitude notes Life experiences Ideas and inspiration Personal goals Your story is unique. Start writing it today with Diary Fast — a simple way to capture, organize, and remember your moments.
Screenshots
Verdict
The clearest difference is ads: Optogenetics Pro at none against Diary Fast's shown. Diary Fast's advantage is update cadence (every 8 days vs every 45 months) and iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support 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.
Optogenetics Pro ships an update every 45 months, Diary Fast every 8 days. The most recent releases landed on October 7, 2026 and September 23, 2026 respectively.
| Parameter | Optogenetics Pro | Diary Fast |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 45 months | Every 8 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 365 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | Popneuron Ltd. | Ashore Limited |
In-app purchases
Optogenetics Pro
No in-app purchases
Diary Fast
No in-app purchases
Questions
Is Optogenetics Pro free?
Is Diary Fast free?
Do Optogenetics Pro or Diary Fast have ads?
Which is updated more often, Optogenetics Pro or Diary Fast?
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