# Daily Data Tracker vs DENSO Spark Plugs

The clearest difference is review sentiment: DENSO Spark Plugs at 100% against Daily Data Tracker's 40%. DENSO Spark Plugs also leads on rating (4.8 vs 3.9) and in-app purchases (none vs 1). Daily Data Tracker's advantage is update cadence (weekly vs every 15 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Daily Data Tracker sells 1 in-app purchase, starting at $0.99 per month. DENSO Spark Plugs asks for nothing beyond the download.

DENSO Spark Plugs holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 9 and 20 respectively. Written reviews point the same way: 40% of Daily Data Tracker's written reviews are positive against 100% of DENSO Spark Plugs's.

Daily Data Tracker ships an update weekly, DENSO Spark Plugs every 15 months. The most recent releases landed on October 18, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Daily Data Tracker | DENSO Spark Plugs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (9 ratings)](https://appshunter.io/ios/app/daily-data-tracker/id372593989/reviews) | **[4.8 (20 ratings)](https://appshunter.io/ios/app/denso-spark-plugs/id1499244061/reviews)** |
| Number of ratings | 9 | **20** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 15 months |
| Monetization | Freemium | **Free** |
| Size | 10 MB | 14 MB |
| Requires iOS | 18.6 | **14** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [文睿 李](https://appshunter.io/developer/372593992) | [Nikaan Nikzad](https://appshunter.io/developer/1465623388) |

## What reviewers say

### Daily Data Tracker

[App page](https://appshunter.io/ios/app/daily-data-tracker/id372593989)

Easily record and track personal daily metrics like weight, blood pressure, or child's growth. Customize data categories, visualize trends with charts, and set reminders to build good habits. Securely store all your information locally.

**Highlights:** Customizable data categories, Visualize trends with charts, Data export, backup, and recovery, Built-in reminder function, Local data storage

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $0.99 | per month |


### DENSO Spark Plugs

[App page](https://appshunter.io/ios/app/denso-spark-plugs/id1499244061)

Find the correct DENSO spark plug for your car by selecting your vehicle model. This app serves as a reference for car owners, mechanics, and sellers to identify suitable spark plug part numbers and their compatibility with various car brands.

**Highlights:** Identify suitable spark plug part numbers, Search by car model, Reference for mechanics, Reference for sellers, Supports numerous car brands

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Daily Data Tracker free?

Daily Data Tracker is free to download, with in-app purchases available.

### Is DENSO Spark Plugs free?

DENSO Spark Plugs is free to download, with no in-app purchases.

### Which has better reviews, Daily Data Tracker or DENSO Spark Plugs?

DENSO Spark Plugs is rated higher. Daily Data Tracker averages 3.9 out of 5 from 9 ratings, while DENSO Spark Plugs averages 4.8 from 20 ratings.

### Do Daily Data Tracker or DENSO Spark Plugs have ads?

Neither Daily Data Tracker nor DENSO Spark Plugs shows ads.

### Which is updated more often, Daily Data Tracker or DENSO Spark Plugs?

Daily Data Tracker ships an update weekly, and DENSO Spark Plugs every 15 months. Most recently, Daily Data Tracker was updated on October 18, 2026 and DENSO Spark Plugs on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*