Farm Spray Pro vs ChemLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Farm Spray Pro
Record, review, and report agricultural spray applications for pesticide label compliance. Features GPS field mapping, a comprehensive pesticide and pest database, and detailed spray reports. Manage records offline and sync automatically for backup.
- Pesticide and pest databases
- GPS field mapping and measurement
- Offline spray record management
- Automatic data backup and sync
- Detailed spray reports
- Turn-by-turn field navigation
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Farm Spray Pro – Record. Review. Report. Use Farm Spray Pro to record spray applications and be in compliance with pesticide label requirements including the latest dicamba products. Draw, GPS, or import field boundaries with Farm Spray Pro in the field. Select a field and review field information before applying a spray record. Add spray records and view spray history or navigate to the field with turn-by-turn directions. FARM SPRAY PRO FEATURES: - Pesticide database with over 12,000 chemicals by pesticide name, manufacturer, EPA number or pest name. - Pest database with over 6,000 pests by pest name or pest type: insect, disease, weed or animal. - GPS Field Mapping to draw field boundaries, mark points, measure acreage, calculate distances, etc. - Manage your spray records with or without a cell connection. - Auto-sync keeps your information backed up and secure. - It’s your information. Not ours. We won’t share it. Only you can. - Detailed Spray Reports include farm, field, EPA number, total amount applied, weather conditions, etc. - Nav to Field provides turn-by-turn directions to the field so that you can get the new guy to the right field every time.
ChemLog
This app helps farmers and pesticide applicators create compliant, professional spray records digitally. It logs application details, weather data, field information, equipment, and pilot profiles, generating one-tap PDF reports and exporting data to CSV.
- Log chemical applications with weather data
- Define and map fields with automatic acreage calculation
- Track equipment and pilot details
- Import chemical labels via barcode or photo
- Generate one-tap PDF compliance reports
- Share records with crew via AirDrop/Messages
- Export data to CSV
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ChemLog requires a ChemLog Pro subscription to access all features. A 7-day free trial is included automatically — no payment required to get started. Subscriptions are billed monthly or annually and can be cancelled at any time in your Apple ID settings. ChemLog is the spray record-keeping app built for farmers and licensed pesticide applicators who want compliant, professional records without the paperwork. LOG EVERY APPLICATION: Record chemicals, application rates, total volume, and area covered for each spray session. Weather data — wind speed, direction, temperature, and humidity — is captured at the time of logging so your records are always accurate. KNOW YOUR FIELDS: Add your fields once and link them to every session. Mark polygon boundaries on satellite imagery by tapping points around your field perimeter — ChemLog automatically calculates acreage so you don't have to measure it yourself. TRACK YOUR EQUIPMENT: Log which drone or sprayer you used for each application. Store FAA registration numbers, serial numbers, and equipment details in one place. MANAGE YOUR PILOTS: Store pilot profiles with their FAA Part 137 certificate, business insurance, FAA drone registration, and state applicators license — all in one place. Assign pilots to spray sessions and include them automatically in your PDF reports. IMPORT CHEMICAL LABELS: Scan the barcode on a pesticide container to pre-fill the EPA registration number instantly. Or import a photo or PDF of the label and let ChemLog read the product name, manufacturer, active ingredients, and EPA numbers automatically. ONE-TAP PDF REPORTS: Generate a complete, compliance-ready application record for any session in one tap. Professional PDF reports include all application details, weather conditions, field information, chemical data, and pilot information — ready to share with your agronomist, co-op, or for your own records. SHARE WITH YOUR CREW: Share chemical and drone records instantly with co-workers via AirDrop or Messages. One tap exports the record as a file — they open it and it imports directly into their ChemLog. EXPORT TO CSV: Export all your spray records as a CSV file for use in Excel, Google Sheets, or any record-keeping system your operation requires. ICLOUD SYNC: Your data stays in sync across all your Apple devices automatically via iCloud. Records logged in the field on your iPhone are waiting for you on your iPad back at the office. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: ChemLog at 5.0 against Farm Spray Pro's 3.3. ChemLog also leads on ads (none vs shown). Farm Spray Pro's advantage is in-app purchases (none vs 2) and update cadence (weekly vs every 2 months). On price 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. ChemLog sells 2 in-app purchases, starting at $9.99 per month. Farm Spray Pro asks for nothing beyond the download.
ChemLog holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Farm Spray Pro has 7 ratings behind it against 1, so its average is the more settled of the two.
Farm Spray Pro ships an update weekly, ChemLog every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | Farm Spray Pro | ChemLog |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (7 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Weekly — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Subscription |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 11.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 16 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | TapLogic, LLC | Kyler Scheer |
Customer experience
Farm Spray Pro
ChemLog
In-app purchases
Farm Spray Pro
No in-app purchases
ChemLog
- ChemLog Monthly7 Days trial$9.991 Month
- ChemLog Annual7 Days trial$99.991 Year
Questions
Is Farm Spray Pro free?
Is ChemLog free?
Which has better reviews, Farm Spray Pro or ChemLog?
Do Farm Spray Pro or ChemLog have ads?
Which is updated more often, Farm Spray Pro or ChemLog?
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